Home / 21,457,503.20-29,689,330.19-18,709,916.10

Finding the Fourth Proportional to 21,457,503.20, 29,689,330.19 and 18,709,916.10

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Solution

The fourth proportional to 21,457,503.20, 29,689,330.19 and 18,709,916.10 is: 25,887,675.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457,503.20 : 29,689,330.19 = 18,709,916.10 : x
  2. Step 2: Convert to fraction form
    21,457,503.20/29,689,330.19 = 18,709,916.10/x
  3. Step 3: Cross multiply
    21,457,503.20x = 29,689,330.19 × 18,709,916.10
  4. Step 4: Simplify right side
    21,457,503.20x = 555,484,876,920,097.12
  5. Step 5: Solve for x
    x = 555,484,876,920,097.12/21,457,503.20
  6. Step 6: Final answer
    x = 25,887,675.36

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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.