Home / 28,291.28-42,395.96-15,643.50

Finding the Fourth Proportional to 28,291.28, 42,395.96 and 15,643.50

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Solution

The fourth proportional to 28,291.28, 42,395.96 and 15,643.50 is: 23,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.28 : 42,395.96 = 15,643.50 : x
  2. Step 2: Convert to fraction form
    28,291.28/42,395.96 = 15,643.50/x
  3. Step 3: Cross multiply
    28,291.28x = 42,395.96 × 15,643.50
  4. Step 4: Simplify right side
    28,291.28x = 663,221,200.26
  5. Step 5: Solve for x
    x = 663,221,200.26/28,291.28
  6. Step 6: Final answer
    x = 23,442.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.