Home / 27,980.28-38,611.98-15,404.76

Finding the Fourth Proportional to 27,980.28, 38,611.98 and 15,404.76

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Solution

The fourth proportional to 27,980.28, 38,611.98 and 15,404.76 is: 21,258.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,980.28 : 38,611.98 = 15,404.76 : x
  2. Step 2: Convert to fraction form
    27,980.28/38,611.98 = 15,404.76/x
  3. Step 3: Cross multiply
    27,980.28x = 38,611.98 × 15,404.76
  4. Step 4: Simplify right side
    27,980.28x = 594,808,285.02
  5. Step 5: Solve for x
    x = 594,808,285.02/27,980.28
  6. Step 6: Final answer
    x = 21,258.12

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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.