Home / 13,543.20-18,690.72-7,576.08

Finding the Fourth Proportional to 13,543.20, 18,690.72 and 7,576.08

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Solution

The fourth proportional to 13,543.20, 18,690.72 and 7,576.08 is: 10,455.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,543.20 : 18,690.72 = 7,576.08 : x
  2. Step 2: Convert to fraction form
    13,543.20/18,690.72 = 7,576.08/x
  3. Step 3: Cross multiply
    13,543.20x = 18,690.72 × 7,576.08
  4. Step 4: Simplify right side
    13,543.20x = 141,602,389.98
  5. Step 5: Solve for x
    x = 141,602,389.98/13,543.20
  6. Step 6: Final answer
    x = 10,455.61

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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.