Home / 13,302.68-18,359.36-7,639.20

Finding the Fourth Proportional to 13,302.68, 18,359.36 and 7,639.20

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Solution

The fourth proportional to 13,302.68, 18,359.36 and 7,639.20 is: 10,543.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,302.68 : 18,359.36 = 7,639.20 : x
  2. Step 2: Convert to fraction form
    13,302.68/18,359.36 = 7,639.20/x
  3. Step 3: Cross multiply
    13,302.68x = 18,359.36 × 7,639.20
  4. Step 4: Simplify right side
    13,302.68x = 140,250,842.01
  5. Step 5: Solve for x
    x = 140,250,842.01/13,302.68
  6. Step 6: Final answer
    x = 10,543.05

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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.