Home / 42,225.60-63,314.40-15,931.20

Finding the Fourth Proportional to 42,225.60, 63,314.40 and 15,931.20

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Solution

The fourth proportional to 42,225.60, 63,314.40 and 15,931.20 is: 23,887.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,225.60 : 63,314.40 = 15,931.20 : x
  2. Step 2: Convert to fraction form
    42,225.60/63,314.40 = 15,931.20/x
  3. Step 3: Cross multiply
    42,225.60x = 63,314.40 × 15,931.20
  4. Step 4: Simplify right side
    42,225.60x = 1,008,674,369.28
  5. Step 5: Solve for x
    x = 1,008,674,369.28/42,225.60
  6. Step 6: Final answer
    x = 23,887.75

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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.