Home / 42,718.64-64,077.98-11,128.61

Finding the Fourth Proportional to 42,718.64, 64,077.98 and 11,128.61

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Solution

The fourth proportional to 42,718.64, 64,077.98 and 11,128.61 is: 16,692.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,718.64 : 64,077.98 = 11,128.61 : x
  2. Step 2: Convert to fraction form
    42,718.64/64,077.98 = 11,128.61/x
  3. Step 3: Cross multiply
    42,718.64x = 64,077.98 × 11,128.61
  4. Step 4: Simplify right side
    42,718.64x = 713,098,953.56
  5. Step 5: Solve for x
    x = 713,098,953.56/42,718.64
  6. Step 6: Final answer
    x = 16,692.92

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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.