Home / 13,515,387.28-18,651,085.92-7,320,280

Finding the Fourth Proportional to 13,515,387.28, 18,651,085.92 and 7,320,280

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Solution

The fourth proportional to 13,515,387.28, 18,651,085.92 and 7,320,280 is: 10,101,905.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515,387.28 : 18,651,085.92 = 7,320,280 : x
  2. Step 2: Convert to fraction form
    13,515,387.28/18,651,085.92 = 7,320,280/x
  3. Step 3: Cross multiply
    13,515,387.28x = 18,651,085.92 × 7,320,280
  4. Step 4: Simplify right side
    13,515,387.28x = 136,531,171,238,457.61
  5. Step 5: Solve for x
    x = 136,531,171,238,457.61/13,515,387.28
  6. Step 6: Final answer
    x = 10,101,905.95

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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.