Home / 12,591.30-18,888.70-5,570.76

Finding the Fourth Proportional to 12,591.30, 18,888.70 and 5,570.76

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Solution

The fourth proportional to 12,591.30, 18,888.70 and 5,570.76 is: 8,356.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,591.30 : 18,888.70 = 5,570.76 : x
  2. Step 2: Convert to fraction form
    12,591.30/18,888.70 = 5,570.76/x
  3. Step 3: Cross multiply
    12,591.30x = 18,888.70 × 5,570.76
  4. Step 4: Simplify right side
    12,591.30x = 105,224,414.41
  5. Step 5: Solve for x
    x = 105,224,414.41/12,591.30
  6. Step 6: Final answer
    x = 8,356.91

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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.