Home / 15,054.32-20,776.50-8,681.15

Finding the Fourth Proportional to 15,054.32, 20,776.50 and 8,681.15

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Solution

The fourth proportional to 15,054.32, 20,776.50 and 8,681.15 is: 11,980.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,054.32 : 20,776.50 = 8,681.15 : x
  2. Step 2: Convert to fraction form
    15,054.32/20,776.50 = 8,681.15/x
  3. Step 3: Cross multiply
    15,054.32x = 20,776.50 × 8,681.15
  4. Step 4: Simplify right side
    15,054.32x = 180,363,964.92
  5. Step 5: Solve for x
    x = 180,363,964.92/15,054.32
  6. Step 6: Final answer
    x = 11,980.88

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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.