Home / 15,496.38-21,384.93-8,783.28

Finding the Fourth Proportional to 15,496.38, 21,384.93 and 8,783.28

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Solution

The fourth proportional to 15,496.38, 21,384.93 and 8,783.28 is: 12,120.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,496.38 : 21,384.93 = 8,783.28 : x
  2. Step 2: Convert to fraction form
    15,496.38/21,384.93 = 8,783.28/x
  3. Step 3: Cross multiply
    15,496.38x = 21,384.93 × 8,783.28
  4. Step 4: Simplify right side
    15,496.38x = 187,829,827.97
  5. Step 5: Solve for x
    x = 187,829,827.97/15,496.38
  6. Step 6: Final answer
    x = 12,120.88

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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.