Home / 19,081.53-26,319.31-13,428.13

Finding the Fourth Proportional to 19,081.53, 26,319.31 and 13,428.13

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Solution

The fourth proportional to 19,081.53, 26,319.31 and 13,428.13 is: 18,521.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,081.53 : 26,319.31 = 13,428.13 : x
  2. Step 2: Convert to fraction form
    19,081.53/26,319.31 = 13,428.13/x
  3. Step 3: Cross multiply
    19,081.53x = 26,319.31 × 13,428.13
  4. Step 4: Simplify right side
    19,081.53x = 353,419,116.19
  5. Step 5: Solve for x
    x = 353,419,116.19/19,081.53
  6. Step 6: Final answer
    x = 18,521.53

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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.