Home / 20,417.42-30,637.24-7,937.92

Finding the Fourth Proportional to 20,417.42, 30,637.24 and 7,937.92

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Solution

The fourth proportional to 20,417.42, 30,637.24 and 7,937.92 is: 11,911.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,417.42 : 30,637.24 = 7,937.92 : x
  2. Step 2: Convert to fraction form
    20,417.42/30,637.24 = 7,937.92/x
  3. Step 3: Cross multiply
    20,417.42x = 30,637.24 × 7,937.92
  4. Step 4: Simplify right side
    20,417.42x = 243,195,960.14
  5. Step 5: Solve for x
    x = 243,195,960.14/20,417.42
  6. Step 6: Final answer
    x = 11,911.20

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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.