Home / 42,921.60-64,378.08-11,761.44

Finding the Fourth Proportional to 42,921.60, 64,378.08 and 11,761.44

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Solution

The fourth proportional to 42,921.60, 64,378.08 and 11,761.44 is: 17,640.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,921.60 : 64,378.08 = 11,761.44 : x
  2. Step 2: Convert to fraction form
    42,921.60/64,378.08 = 11,761.44/x
  3. Step 3: Cross multiply
    42,921.60x = 64,378.08 × 11,761.44
  4. Step 4: Simplify right side
    42,921.60x = 757,178,925.24
  5. Step 5: Solve for x
    x = 757,178,925.24/42,921.60
  6. Step 6: Final answer
    x = 17,640.98

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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.