Home / 31,787.82-47,681.76-11,011.32

Finding the Fourth Proportional to 31,787.82, 47,681.76 and 11,011.32

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Solution

The fourth proportional to 31,787.82, 47,681.76 and 11,011.32 is: 16,516.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,787.82 : 47,681.76 = 11,011.32 : x
  2. Step 2: Convert to fraction form
    31,787.82/47,681.76 = 11,011.32/x
  3. Step 3: Cross multiply
    31,787.82x = 47,681.76 × 11,011.32
  4. Step 4: Simplify right side
    31,787.82x = 525,039,117.52
  5. Step 5: Solve for x
    x = 525,039,117.52/31,787.82
  6. Step 6: Final answer
    x = 16,516.99

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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.