Home / 38,867.28-53,655.12-30,381.76

Finding the Fourth Proportional to 38,867.28, 53,655.12 and 30,381.76

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Solution

The fourth proportional to 38,867.28, 53,655.12 and 30,381.76 is: 41,941.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,867.28 : 53,655.12 = 30,381.76 : x
  2. Step 2: Convert to fraction form
    38,867.28/53,655.12 = 30,381.76/x
  3. Step 3: Cross multiply
    38,867.28x = 53,655.12 × 30,381.76
  4. Step 4: Simplify right side
    38,867.28x = 1,630,136,978.61
  5. Step 5: Solve for x
    x = 1,630,136,978.61/38,867.28
  6. Step 6: Final answer
    x = 41,941.11

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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.