Home / 15,156.42-20,924.53-10,129.15

Finding the Fourth Proportional to 15,156.42, 20,924.53 and 10,129.15

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Solution

The fourth proportional to 15,156.42, 20,924.53 and 10,129.15 is: 13,984.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,156.42 : 20,924.53 = 10,129.15 : x
  2. Step 2: Convert to fraction form
    15,156.42/20,924.53 = 10,129.15/x
  3. Step 3: Cross multiply
    15,156.42x = 20,924.53 × 10,129.15
  4. Step 4: Simplify right side
    15,156.42x = 211,947,780.68
  5. Step 5: Solve for x
    x = 211,947,780.68/15,156.42
  6. Step 6: Final answer
    x = 13,984.03

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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.