Home / 15,535.20-23,302.80-5,145.60

Finding the Fourth Proportional to 15,535.20, 23,302.80 and 5,145.60

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Solution

The fourth proportional to 15,535.20, 23,302.80 and 5,145.60 is: 7,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.20 : 23,302.80 = 5,145.60 : x
  2. Step 2: Convert to fraction form
    15,535.20/23,302.80 = 5,145.60/x
  3. Step 3: Cross multiply
    15,535.20x = 23,302.80 × 5,145.60
  4. Step 4: Simplify right side
    15,535.20x = 119,906,887.68
  5. Step 5: Solve for x
    x = 119,906,887.68/15,535.20
  6. Step 6: Final answer
    x = 7,718.40

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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.