Home / 20,759.86-31,152.75-15,127.06

Finding the Fourth Proportional to 20,759.86, 31,152.75 and 15,127.06

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Solution

The fourth proportional to 20,759.86, 31,152.75 and 15,127.06 is: 22,700.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.86 : 31,152.75 = 15,127.06 : x
  2. Step 2: Convert to fraction form
    20,759.86/31,152.75 = 15,127.06/x
  3. Step 3: Cross multiply
    20,759.86x = 31,152.75 × 15,127.06
  4. Step 4: Simplify right side
    20,759.86x = 471,249,518.42
  5. Step 5: Solve for x
    x = 471,249,518.42/20,759.86
  6. Step 6: Final answer
    x = 22,700.03

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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.