Home / 28,319.64-42,484.60-11,670.42

Finding the Fourth Proportional to 28,319.64, 42,484.60 and 11,670.42

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Solution

The fourth proportional to 28,319.64, 42,484.60 and 11,670.42 is: 17,507.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.64 : 42,484.60 = 11,670.42 : x
  2. Step 2: Convert to fraction form
    28,319.64/42,484.60 = 11,670.42/x
  3. Step 3: Cross multiply
    28,319.64x = 42,484.60 × 11,670.42
  4. Step 4: Simplify right side
    28,319.64x = 495,813,125.53
  5. Step 5: Solve for x
    x = 495,813,125.53/28,319.64
  6. Step 6: Final answer
    x = 17,507.75

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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.