Home / 38,123.01-52,611.77-21,129.11

Finding the Fourth Proportional to 38,123.01, 52,611.77 and 21,129.11

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Solution

The fourth proportional to 38,123.01, 52,611.77 and 21,129.11 is: 29,159.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,123.01 : 52,611.77 = 21,129.11 : x
  2. Step 2: Convert to fraction form
    38,123.01/52,611.77 = 21,129.11/x
  3. Step 3: Cross multiply
    38,123.01x = 52,611.77 × 21,129.11
  4. Step 4: Simplify right side
    38,123.01x = 1,111,639,506.92
  5. Step 5: Solve for x
    x = 1,111,639,506.92/38,123.01
  6. Step 6: Final answer
    x = 29,159.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.