Home / 28,530.28-42,835.74-15,429.16

Finding the Fourth Proportional to 28,530.28, 42,835.74 and 15,429.16

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Solution

The fourth proportional to 28,530.28, 42,835.74 and 15,429.16 is: 23,165.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.28 : 42,835.74 = 15,429.16 : x
  2. Step 2: Convert to fraction form
    28,530.28/42,835.74 = 15,429.16/x
  3. Step 3: Cross multiply
    28,530.28x = 42,835.74 × 15,429.16
  4. Step 4: Simplify right side
    28,530.28x = 660,919,486.18
  5. Step 5: Solve for x
    x = 660,919,486.18/28,530.28
  6. Step 6: Final answer
    x = 23,165.55

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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.