Home / 18,898,428-26,087,892.12-12,707,063.40

Finding the Fourth Proportional to 18,898,428, 26,087,892.12 and 12,707,063.40

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Solution

The fourth proportional to 18,898,428, 26,087,892.12 and 12,707,063.40 is: 17,541,167.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,898,428 : 26,087,892.12 = 12,707,063.40 : x
  2. Step 2: Convert to fraction form
    18,898,428/26,087,892.12 = 12,707,063.40/x
  3. Step 3: Cross multiply
    18,898,428x = 26,087,892.12 × 12,707,063.40
  4. Step 4: Simplify right side
    18,898,428x = 331,500,499,141,200.44
  5. Step 5: Solve for x
    x = 331,500,499,141,200.44/18,898,428
  6. Step 6: Final answer
    x = 17,541,167.93

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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.