Home / 28,570.72-42,842.04-11,925.76

Finding the Fourth Proportional to 28,570.72, 42,842.04 and 11,925.76

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Solution

The fourth proportional to 28,570.72, 42,842.04 and 11,925.76 is: 17,882.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,570.72 : 42,842.04 = 11,925.76 : x
  2. Step 2: Convert to fraction form
    28,570.72/42,842.04 = 11,925.76/x
  3. Step 3: Cross multiply
    28,570.72x = 42,842.04 × 11,925.76
  4. Step 4: Simplify right side
    28,570.72x = 510,923,886.95
  5. Step 5: Solve for x
    x = 510,923,886.95/28,570.72
  6. Step 6: Final answer
    x = 17,882.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.