Home / 21,206,782,807.40-31,810,174,211.10-9,403,371,909.20

Finding the Fourth Proportional to 21,206,782,807.40, 31,810,174,211.10 and 9,403,371,909.20

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Solution

The fourth proportional to 21,206,782,807.40, 31,810,174,211.10 and 9,403,371,909.20 is: 14,105,057,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206,782,807.40 : 31,810,174,211.10 = 9,403,371,909.20 : x
  2. Step 2: Convert to fraction form
    21,206,782,807.40/31,810,174,211.10 = 9,403,371,909.20/x
  3. Step 3: Cross multiply
    21,206,782,807.40x = 31,810,174,211.10 × 9,403,371,909.20
  4. Step 4: Simplify right side
    21,206,782,807.40x = 299,122,898,603,416,027,136
  5. Step 5: Solve for x
    x = 299,122,898,603,416,027,136/21,206,782,807.40
  6. Step 6: Final answer
    x = 14,105,057,863.80

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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.