Home / 31,391.93-47,088.45-11,415.60

Finding the Fourth Proportional to 31,391.93, 47,088.45 and 11,415.60

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Solution

The fourth proportional to 31,391.93, 47,088.45 and 11,415.60 is: 17,123.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391.93 : 47,088.45 = 11,415.60 : x
  2. Step 2: Convert to fraction form
    31,391.93/47,088.45 = 11,415.60/x
  3. Step 3: Cross multiply
    31,391.93x = 47,088.45 × 11,415.60
  4. Step 4: Simplify right side
    31,391.93x = 537,542,909.82
  5. Step 5: Solve for x
    x = 537,542,909.82/31,391.93
  6. Step 6: Final answer
    x = 17,123.60

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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.