Home / 12,960,029.60-19,440,044.40-7,280,439.20

Finding the Fourth Proportional to 12,960,029.60, 19,440,044.40 and 7,280,439.20

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Solution

The fourth proportional to 12,960,029.60, 19,440,044.40 and 7,280,439.20 is: 10,920,658.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,960,029.60 : 19,440,044.40 = 7,280,439.20 : x
  2. Step 2: Convert to fraction form
    12,960,029.60/19,440,044.40 = 7,280,439.20/x
  3. Step 3: Cross multiply
    12,960,029.60x = 19,440,044.40 × 7,280,439.20
  4. Step 4: Simplify right side
    12,960,029.60x = 141,532,061,299,500.47
  5. Step 5: Solve for x
    x = 141,532,061,299,500.47/12,960,029.60
  6. Step 6: Final answer
    x = 10,920,658.80

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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.