Home / 27,972.95-38,602.58-15,397.70

Finding the Fourth Proportional to 27,972.95, 38,602.58 and 15,397.70

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Solution

The fourth proportional to 27,972.95, 38,602.58 and 15,397.70 is: 21,248.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,972.95 : 38,602.58 = 15,397.70 : x
  2. Step 2: Convert to fraction form
    27,972.95/38,602.58 = 15,397.70/x
  3. Step 3: Cross multiply
    27,972.95x = 38,602.58 × 15,397.70
  4. Step 4: Simplify right side
    27,972.95x = 594,390,676.06
  5. Step 5: Solve for x
    x = 594,390,676.06/27,972.95
  6. Step 6: Final answer
    x = 21,248.77

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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.