Home / 31,877.40-47,774.35-13,135.62

Finding the Fourth Proportional to 31,877.40, 47,774.35 and 13,135.62

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Solution

The fourth proportional to 31,877.40, 47,774.35 and 13,135.62 is: 19,686.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,877.40 : 47,774.35 = 13,135.62 : x
  2. Step 2: Convert to fraction form
    31,877.40/47,774.35 = 13,135.62/x
  3. Step 3: Cross multiply
    31,877.40x = 47,774.35 × 13,135.62
  4. Step 4: Simplify right side
    31,877.40x = 627,545,707.35
  5. Step 5: Solve for x
    x = 627,545,707.35/31,877.40
  6. Step 6: Final answer
    x = 19,686.23

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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.