Home / 15,549.12-21,457.74-8,475.90

Finding the Fourth Proportional to 15,549.12, 21,457.74 and 8,475.90

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Solution

The fourth proportional to 15,549.12, 21,457.74 and 8,475.90 is: 11,696.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,549.12 : 21,457.74 = 8,475.90 : x
  2. Step 2: Convert to fraction form
    15,549.12/21,457.74 = 8,475.90/x
  3. Step 3: Cross multiply
    15,549.12x = 21,457.74 × 8,475.90
  4. Step 4: Simplify right side
    15,549.12x = 181,873,658.47
  5. Step 5: Solve for x
    x = 181,873,658.47/15,549.12
  6. Step 6: Final answer
    x = 11,696.72

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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.