Home / 28,218.04-38,938.59-15,471

Finding the Fourth Proportional to 28,218.04, 38,938.59 and 15,471

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Solution

The fourth proportional to 28,218.04, 38,938.59 and 15,471 is: 21,348.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218.04 : 38,938.59 = 15,471 : x
  2. Step 2: Convert to fraction form
    28,218.04/38,938.59 = 15,471/x
  3. Step 3: Cross multiply
    28,218.04x = 38,938.59 × 15,471
  4. Step 4: Simplify right side
    28,218.04x = 602,418,925.89
  5. Step 5: Solve for x
    x = 602,418,925.89/28,218.04
  6. Step 6: Final answer
    x = 21,348.72

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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.