Home / 12,077.50-18,117.87-5,153.62

Finding the Fourth Proportional to 12,077.50, 18,117.87 and 5,153.62

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Solution

The fourth proportional to 12,077.50, 18,117.87 and 5,153.62 is: 7,731.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,077.50 : 18,117.87 = 5,153.62 : x
  2. Step 2: Convert to fraction form
    12,077.50/18,117.87 = 5,153.62/x
  3. Step 3: Cross multiply
    12,077.50x = 18,117.87 × 5,153.62
  4. Step 4: Simplify right side
    12,077.50x = 93,372,617.19
  5. Step 5: Solve for x
    x = 93,372,617.19/12,077.50
  6. Step 6: Final answer
    x = 7,731.12

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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.