Home / 15,128.46-20,865.47-10,351.25

Finding the Fourth Proportional to 15,128.46, 20,865.47 and 10,351.25

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Solution

The fourth proportional to 15,128.46, 20,865.47 and 10,351.25 is: 14,276.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128.46 : 20,865.47 = 10,351.25 : x
  2. Step 2: Convert to fraction form
    15,128.46/20,865.47 = 10,351.25/x
  3. Step 3: Cross multiply
    15,128.46x = 20,865.47 × 10,351.25
  4. Step 4: Simplify right side
    15,128.46x = 215,983,618.50
  5. Step 5: Solve for x
    x = 215,983,618.50/15,128.46
  6. Step 6: Final answer
    x = 14,276.64

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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.