Home / 38,118.80-52,602.40-21,123.30

Finding the Fourth Proportional to 38,118.80, 52,602.40 and 21,123.30

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Solution

The fourth proportional to 38,118.80, 52,602.40 and 21,123.30 is: 29,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,118.80 : 52,602.40 = 21,123.30 : x
  2. Step 2: Convert to fraction form
    38,118.80/52,602.40 = 21,123.30/x
  3. Step 3: Cross multiply
    38,118.80x = 52,602.40 × 21,123.30
  4. Step 4: Simplify right side
    38,118.80x = 1,111,136,275.92
  5. Step 5: Solve for x
    x = 1,111,136,275.92/38,118.80
  6. Step 6: Final answer
    x = 29,149.30

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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.