Home / 28,116.06-38,798.64-15,540

Finding the Fourth Proportional to 28,116.06, 38,798.64 and 15,540

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Solution

The fourth proportional to 28,116.06, 38,798.64 and 15,540 is: 21,444.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116.06 : 38,798.64 = 15,540 : x
  2. Step 2: Convert to fraction form
    28,116.06/38,798.64 = 15,540/x
  3. Step 3: Cross multiply
    28,116.06x = 38,798.64 × 15,540
  4. Step 4: Simplify right side
    28,116.06x = 602,930,865.60
  5. Step 5: Solve for x
    x = 602,930,865.60/28,116.06
  6. Step 6: Final answer
    x = 21,444.36

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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.