Home / 15,499.64-21,389.04-8,425.88

Finding the Fourth Proportional to 15,499.64, 21,389.04 and 8,425.88

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Solution

The fourth proportional to 15,499.64, 21,389.04 and 8,425.88 is: 11,627.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.64 : 21,389.04 = 8,425.88 : x
  2. Step 2: Convert to fraction form
    15,499.64/21,389.04 = 8,425.88/x
  3. Step 3: Cross multiply
    15,499.64x = 21,389.04 × 8,425.88
  4. Step 4: Simplify right side
    15,499.64x = 180,221,484.36
  5. Step 5: Solve for x
    x = 180,221,484.36/15,499.64
  6. Step 6: Final answer
    x = 11,627.46

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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.