Home / 31,846.28-43,967.76-20,521.40

Finding the Fourth Proportional to 31,846.28, 43,967.76 and 20,521.40

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Solution

The fourth proportional to 31,846.28, 43,967.76 and 20,521.40 is: 28,332.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,846.28 : 43,967.76 = 20,521.40 : x
  2. Step 2: Convert to fraction form
    31,846.28/43,967.76 = 20,521.40/x
  3. Step 3: Cross multiply
    31,846.28x = 43,967.76 × 20,521.40
  4. Step 4: Simplify right side
    31,846.28x = 902,279,990.06
  5. Step 5: Solve for x
    x = 902,279,990.06/31,846.28
  6. Step 6: Final answer
    x = 28,332.35

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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.