Home / 29,291.15-40,421.29-15,862.30

Finding the Fourth Proportional to 29,291.15, 40,421.29 and 15,862.30

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Solution

The fourth proportional to 29,291.15, 40,421.29 and 15,862.30 is: 21,889.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,291.15 : 40,421.29 = 15,862.30 : x
  2. Step 2: Convert to fraction form
    29,291.15/40,421.29 = 15,862.30/x
  3. Step 3: Cross multiply
    29,291.15x = 40,421.29 × 15,862.30
  4. Step 4: Simplify right side
    29,291.15x = 641,174,346.95
  5. Step 5: Solve for x
    x = 641,174,346.95/29,291.15
  6. Step 6: Final answer
    x = 21,889.70

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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.