Home / 28,155.04-38,851.92-15,580

Finding the Fourth Proportional to 28,155.04, 38,851.92 and 15,580

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Solution

The fourth proportional to 28,155.04, 38,851.92 and 15,580 is: 21,499.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155.04 : 38,851.92 = 15,580 : x
  2. Step 2: Convert to fraction form
    28,155.04/38,851.92 = 15,580/x
  3. Step 3: Cross multiply
    28,155.04x = 38,851.92 × 15,580
  4. Step 4: Simplify right side
    28,155.04x = 605,312,913.60
  5. Step 5: Solve for x
    x = 605,312,913.60/28,155.04
  6. Step 6: Final answer
    x = 21,499.27

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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.