Home / 21,025.13-29,016.65-15,710.72

Finding the Fourth Proportional to 21,025.13, 29,016.65 and 15,710.72

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Solution

The fourth proportional to 21,025.13, 29,016.65 and 15,710.72 is: 21,682.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,025.13 : 29,016.65 = 15,710.72 : x
  2. Step 2: Convert to fraction form
    21,025.13/29,016.65 = 15,710.72/x
  3. Step 3: Cross multiply
    21,025.13x = 29,016.65 × 15,710.72
  4. Step 4: Simplify right side
    21,025.13x = 455,872,384.93
  5. Step 5: Solve for x
    x = 455,872,384.93/21,025.13
  6. Step 6: Final answer
    x = 21,682.26

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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.