Home / 15,549.86-21,459.39-8,836.63

Finding the Fourth Proportional to 15,549.86, 21,459.39 and 8,836.63

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Solution

The fourth proportional to 15,549.86, 21,459.39 and 8,836.63 is: 12,194.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,549.86 : 21,459.39 = 8,836.63 : x
  2. Step 2: Convert to fraction form
    15,549.86/21,459.39 = 8,836.63/x
  3. Step 3: Cross multiply
    15,549.86x = 21,459.39 × 8,836.63
  4. Step 4: Simplify right side
    15,549.86x = 189,628,689.46
  5. Step 5: Solve for x
    x = 189,628,689.46/15,549.86
  6. Step 6: Final answer
    x = 12,194.88

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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.