Home / 31,532.90-47,312.88-11,808.98

Finding the Fourth Proportional to 31,532.90, 47,312.88 and 11,808.98

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Solution

The fourth proportional to 31,532.90, 47,312.88 and 11,808.98 is: 17,718.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,532.90 : 47,312.88 = 11,808.98 : x
  2. Step 2: Convert to fraction form
    31,532.90/47,312.88 = 11,808.98/x
  3. Step 3: Cross multiply
    31,532.90x = 47,312.88 × 11,808.98
  4. Step 4: Simplify right side
    31,532.90x = 558,716,853.66
  5. Step 5: Solve for x
    x = 558,716,853.66/31,532.90
  6. Step 6: Final answer
    x = 17,718.54

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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.