Home / 13,551.23-18,701.28-8,378.24

Finding the Fourth Proportional to 13,551.23, 18,701.28 and 8,378.24

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Solution

The fourth proportional to 13,551.23, 18,701.28 and 8,378.24 is: 11,562.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.23 : 18,701.28 = 8,378.24 : x
  2. Step 2: Convert to fraction form
    13,551.23/18,701.28 = 8,378.24/x
  3. Step 3: Cross multiply
    13,551.23x = 18,701.28 × 8,378.24
  4. Step 4: Simplify right side
    13,551.23x = 156,683,718.64
  5. Step 5: Solve for x
    x = 156,683,718.64/13,551.23
  6. Step 6: Final answer
    x = 11,562.32

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Half scale
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Double scale
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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.