Home / 38,188-52,700.16-21,422.08

Finding the Fourth Proportional to 38,188, 52,700.16 and 21,422.08

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Solution

The fourth proportional to 38,188, 52,700.16 and 21,422.08 is: 29,562.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,188 : 52,700.16 = 21,422.08 : x
  2. Step 2: Convert to fraction form
    38,188/52,700.16 = 21,422.08/x
  3. Step 3: Cross multiply
    38,188x = 52,700.16 × 21,422.08
  4. Step 4: Simplify right side
    38,188x = 1,128,947,043.53
  5. Step 5: Solve for x
    x = 1,128,947,043.53/38,188
  6. Step 6: Final answer
    x = 29,562.87

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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.