Home / 15,549.16-21,457.28-8,475.44

Finding the Fourth Proportional to 15,549.16, 21,457.28 and 8,475.44

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Solution

The fourth proportional to 15,549.16, 21,457.28 and 8,475.44 is: 11,695.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,549.16 : 21,457.28 = 8,475.44 : x
  2. Step 2: Convert to fraction form
    15,549.16/21,457.28 = 8,475.44/x
  3. Step 3: Cross multiply
    15,549.16x = 21,457.28 × 8,475.44
  4. Step 4: Simplify right side
    15,549.16x = 181,859,889.20
  5. Step 5: Solve for x
    x = 181,859,889.20/15,549.16
  6. Step 6: Final answer
    x = 11,695.80

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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.