Home / 13,309,211.50-18,366,767.21-7,197,640

Finding the Fourth Proportional to 13,309,211.50, 18,366,767.21 and 7,197,640

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Solution

The fourth proportional to 13,309,211.50, 18,366,767.21 and 7,197,640 is: 9,932,773.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309,211.50 : 18,366,767.21 = 7,197,640 : x
  2. Step 2: Convert to fraction form
    13,309,211.50/18,366,767.21 = 7,197,640/x
  3. Step 3: Cross multiply
    13,309,211.50x = 18,366,767.21 × 7,197,640
  4. Step 4: Simplify right side
    13,309,211.50x = 132,197,378,341,384.41
  5. Step 5: Solve for x
    x = 132,197,378,341,384.41/13,309,211.50
  6. Step 6: Final answer
    x = 9,932,773.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.