Home / 13,557.12-20,317.56-5,756.16

Finding the Fourth Proportional to 13,557.12, 20,317.56 and 5,756.16

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Solution

The fourth proportional to 13,557.12, 20,317.56 and 5,756.16 is: 8,626.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,557.12 : 20,317.56 = 5,756.16 : x
  2. Step 2: Convert to fraction form
    13,557.12/20,317.56 = 5,756.16/x
  3. Step 3: Cross multiply
    13,557.12x = 20,317.56 × 5,756.16
  4. Step 4: Simplify right side
    13,557.12x = 116,951,126.17
  5. Step 5: Solve for x
    x = 116,951,126.17/13,557.12
  6. Step 6: Final answer
    x = 8,626.55

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1.5x scale

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.