Home / 31,778.51-47,652.95-11,787.20

Finding the Fourth Proportional to 31,778.51, 47,652.95 and 11,787.20

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Solution

The fourth proportional to 31,778.51, 47,652.95 and 11,787.20 is: 17,675.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,778.51 : 47,652.95 = 11,787.20 : x
  2. Step 2: Convert to fraction form
    31,778.51/47,652.95 = 11,787.20/x
  3. Step 3: Cross multiply
    31,778.51x = 47,652.95 × 11,787.20
  4. Step 4: Simplify right side
    31,778.51x = 561,694,555.04
  5. Step 5: Solve for x
    x = 561,694,555.04/31,778.51
  6. Step 6: Final answer
    x = 17,675.30

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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.