Home / 31,561.91-47,342.81-18,405.06

Finding the Fourth Proportional to 31,561.91, 47,342.81 and 18,405.06

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Solution

The fourth proportional to 31,561.91, 47,342.81 and 18,405.06 is: 27,607.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,561.91 : 47,342.81 = 18,405.06 : x
  2. Step 2: Convert to fraction form
    31,561.91/47,342.81 = 18,405.06/x
  3. Step 3: Cross multiply
    31,561.91x = 47,342.81 × 18,405.06
  4. Step 4: Simplify right side
    31,561.91x = 871,347,023.57
  5. Step 5: Solve for x
    x = 871,347,023.57/31,561.91
  6. Step 6: Final answer
    x = 27,607.55

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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.