Home / 31,780.59-47,655.72-11,776.35

Finding the Fourth Proportional to 31,780.59, 47,655.72 and 11,776.35

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Solution

The fourth proportional to 31,780.59, 47,655.72 and 11,776.35 is: 17,658.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,780.59 : 47,655.72 = 11,776.35 : x
  2. Step 2: Convert to fraction form
    31,780.59/47,655.72 = 11,776.35/x
  3. Step 3: Cross multiply
    31,780.59x = 47,655.72 × 11,776.35
  4. Step 4: Simplify right side
    31,780.59x = 561,210,438.22
  5. Step 5: Solve for x
    x = 561,210,438.22/31,780.59
  6. Step 6: Final answer
    x = 17,658.91

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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.