Home / 19,407.87-29,116.13-10,638.27

Finding the Fourth Proportional to 19,407.87, 29,116.13 and 10,638.27

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Solution

The fourth proportional to 19,407.87, 29,116.13 and 10,638.27 is: 15,959.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,407.87 : 29,116.13 = 10,638.27 : x
  2. Step 2: Convert to fraction form
    19,407.87/29,116.13 = 10,638.27/x
  3. Step 3: Cross multiply
    19,407.87x = 29,116.13 × 10,638.27
  4. Step 4: Simplify right side
    19,407.87x = 309,745,199.10
  5. Step 5: Solve for x
    x = 309,745,199.10/19,407.87
  6. Step 6: Final answer
    x = 15,959.77

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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.