Home / 21,275,136,478.40-31,912,704,717.60-12,894,524,484.80

Finding the Fourth Proportional to 21,275,136,478.40, 31,912,704,717.60 and 12,894,524,484.80

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Solution

The fourth proportional to 21,275,136,478.40, 31,912,704,717.60 and 12,894,524,484.80 is: 19,341,786,727.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,136,478.40 : 31,912,704,717.60 = 12,894,524,484.80 : x
  2. Step 2: Convert to fraction form
    21,275,136,478.40/31,912,704,717.60 = 12,894,524,484.80/x
  3. Step 3: Cross multiply
    21,275,136,478.40x = 31,912,704,717.60 × 12,894,524,484.80
  4. Step 4: Simplify right side
    21,275,136,478.40x = 411,499,152,357,285,625,856
  5. Step 5: Solve for x
    x = 411,499,152,357,285,625,856/21,275,136,478.40
  6. Step 6: Final answer
    x = 19,341,786,727.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.