Home / 28,484.11-42,726.16-18,631.67

Finding the Fourth Proportional to 28,484.11, 42,726.16 and 18,631.67

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Solution

The fourth proportional to 28,484.11, 42,726.16 and 18,631.67 is: 27,947.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,484.11 : 42,726.16 = 18,631.67 : x
  2. Step 2: Convert to fraction form
    28,484.11/42,726.16 = 18,631.67/x
  3. Step 3: Cross multiply
    28,484.11x = 42,726.16 × 18,631.67
  4. Step 4: Simplify right side
    28,484.11x = 796,059,713.49
  5. Step 5: Solve for x
    x = 796,059,713.49/28,484.11
  6. Step 6: Final answer
    x = 27,947.51

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Similar ratio
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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.