Home / 28,004.64-38,646.18-15,257.78

Finding the Fourth Proportional to 28,004.64, 38,646.18 and 15,257.78

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Solution

The fourth proportional to 28,004.64, 38,646.18 and 15,257.78 is: 21,055.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,004.64 : 38,646.18 = 15,257.78 : x
  2. Step 2: Convert to fraction form
    28,004.64/38,646.18 = 15,257.78/x
  3. Step 3: Cross multiply
    28,004.64x = 38,646.18 × 15,257.78
  4. Step 4: Simplify right side
    28,004.64x = 589,654,892.58
  5. Step 5: Solve for x
    x = 589,654,892.58/28,004.64
  6. Step 6: Final answer
    x = 21,055.62

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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.