Home / 15,134.79-20,864.14-10,021.75

Finding the Fourth Proportional to 15,134.79, 20,864.14 and 10,021.75

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Solution

The fourth proportional to 15,134.79, 20,864.14 and 10,021.75 is: 13,815.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,134.79 : 20,864.14 = 10,021.75 : x
  2. Step 2: Convert to fraction form
    15,134.79/20,864.14 = 10,021.75/x
  3. Step 3: Cross multiply
    15,134.79x = 20,864.14 × 10,021.75
  4. Step 4: Simplify right side
    15,134.79x = 209,095,204.70
  5. Step 5: Solve for x
    x = 209,095,204.70/15,134.79
  6. Step 6: Final answer
    x = 13,815.53

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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.