Home / 21,325.83-31,999.55-14,385.75

Finding the Fourth Proportional to 21,325.83, 31,999.55 and 14,385.75

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Solution

The fourth proportional to 21,325.83, 31,999.55 and 14,385.75 is: 21,585.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.83 : 31,999.55 = 14,385.75 : x
  2. Step 2: Convert to fraction form
    21,325.83/31,999.55 = 14,385.75/x
  3. Step 3: Cross multiply
    21,325.83x = 31,999.55 × 14,385.75
  4. Step 4: Simplify right side
    21,325.83x = 460,337,454.48
  5. Step 5: Solve for x
    x = 460,337,454.48/21,325.83
  6. Step 6: Final answer
    x = 21,585.91

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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.