Home / 15,552.48-21,462.72-8,479.20

Finding the Fourth Proportional to 15,552.48, 21,462.72 and 8,479.20

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Solution

The fourth proportional to 15,552.48, 21,462.72 and 8,479.20 is: 11,701.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,552.48 : 21,462.72 = 8,479.20 : x
  2. Step 2: Convert to fraction form
    15,552.48/21,462.72 = 8,479.20/x
  3. Step 3: Cross multiply
    15,552.48x = 21,462.72 × 8,479.20
  4. Step 4: Simplify right side
    15,552.48x = 181,986,695.42
  5. Step 5: Solve for x
    x = 181,986,695.42/15,552.48
  6. Step 6: Final answer
    x = 11,701.46

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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.