Home / 28,080.48-38,751.08-15,505.28

Finding the Fourth Proportional to 28,080.48, 38,751.08 and 15,505.28

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Solution

The fourth proportional to 28,080.48, 38,751.08 and 15,505.28 is: 21,397.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,080.48 : 38,751.08 = 15,505.28 : x
  2. Step 2: Convert to fraction form
    28,080.48/38,751.08 = 15,505.28/x
  3. Step 3: Cross multiply
    28,080.48x = 38,751.08 × 15,505.28
  4. Step 4: Simplify right side
    28,080.48x = 600,846,345.70
  5. Step 5: Solve for x
    x = 600,846,345.70/28,080.48
  6. Step 6: Final answer
    x = 21,397.30

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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.