Home / 13,861.04-19,129.96-9,155.12

Finding the Fourth Proportional to 13,861.04, 19,129.96 and 9,155.12

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Solution

The fourth proportional to 13,861.04, 19,129.96 and 9,155.12 is: 12,635.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,861.04 : 19,129.96 = 9,155.12 : x
  2. Step 2: Convert to fraction form
    13,861.04/19,129.96 = 9,155.12/x
  3. Step 3: Cross multiply
    13,861.04x = 19,129.96 × 9,155.12
  4. Step 4: Simplify right side
    13,861.04x = 175,137,079.40
  5. Step 5: Solve for x
    x = 175,137,079.40/13,861.04
  6. Step 6: Final answer
    x = 12,635.20

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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.