Home / 15,368.38-21,166.95-13,268.86

Finding the Fourth Proportional to 15,368.38, 21,166.95 and 13,268.86

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Solution

The fourth proportional to 15,368.38, 21,166.95 and 13,268.86 is: 18,275.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,368.38 : 21,166.95 = 13,268.86 : x
  2. Step 2: Convert to fraction form
    15,368.38/21,166.95 = 13,268.86/x
  3. Step 3: Cross multiply
    15,368.38x = 21,166.95 × 13,268.86
  4. Step 4: Simplify right side
    15,368.38x = 280,861,296.18
  5. Step 5: Solve for x
    x = 280,861,296.18/15,368.38
  6. Step 6: Final answer
    x = 18,275.27

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1.5x scale

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.