Home / 21,259.55-31,869.64-9,407.04

Finding the Fourth Proportional to 21,259.55, 31,869.64 and 9,407.04

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Solution

The fourth proportional to 21,259.55, 31,869.64 and 9,407.04 is: 14,101.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,259.55 : 31,869.64 = 9,407.04 : x
  2. Step 2: Convert to fraction form
    21,259.55/31,869.64 = 9,407.04/x
  3. Step 3: Cross multiply
    21,259.55x = 31,869.64 × 9,407.04
  4. Step 4: Simplify right side
    21,259.55x = 299,798,978.27
  5. Step 5: Solve for x
    x = 299,798,978.27/21,259.55
  6. Step 6: Final answer
    x = 14,101.85

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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.