Home / 20,964.77-31,425.95-10,418.57

Finding the Fourth Proportional to 20,964.77, 31,425.95 and 10,418.57

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Solution

The fourth proportional to 20,964.77, 31,425.95 and 10,418.57 is: 15,617.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.77 : 31,425.95 = 10,418.57 : x
  2. Step 2: Convert to fraction form
    20,964.77/31,425.95 = 10,418.57/x
  3. Step 3: Cross multiply
    20,964.77x = 31,425.95 × 10,418.57
  4. Step 4: Simplify right side
    20,964.77x = 327,413,328.81
  5. Step 5: Solve for x
    x = 327,413,328.81/20,964.77
  6. Step 6: Final answer
    x = 15,617.31

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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.