Home / 42,912.38-64,382.02-19,239.77

Finding the Fourth Proportional to 42,912.38, 64,382.02 and 19,239.77

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Solution

The fourth proportional to 42,912.38, 64,382.02 and 19,239.77 is: 28,865.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,912.38 : 64,382.02 = 19,239.77 : x
  2. Step 2: Convert to fraction form
    42,912.38/64,382.02 = 19,239.77/x
  3. Step 3: Cross multiply
    42,912.38x = 64,382.02 × 19,239.77
  4. Step 4: Simplify right side
    42,912.38x = 1,238,695,369.79
  5. Step 5: Solve for x
    x = 1,238,695,369.79/42,912.38
  6. Step 6: Final answer
    x = 28,865.69

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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.