Home / 20,601.30-30,911.55-15,417.30

Finding the Fourth Proportional to 20,601.30, 30,911.55 and 15,417.30

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Solution

The fourth proportional to 20,601.30, 30,911.55 and 15,417.30 is: 23,133.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.30 : 30,911.55 = 15,417.30 : x
  2. Step 2: Convert to fraction form
    20,601.30/30,911.55 = 15,417.30/x
  3. Step 3: Cross multiply
    20,601.30x = 30,911.55 × 15,417.30
  4. Step 4: Simplify right side
    20,601.30x = 476,572,639.82
  5. Step 5: Solve for x
    x = 476,572,639.82/20,601.30
  6. Step 6: Final answer
    x = 23,133.13

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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.