Home / 31,458.68-47,238.18-18,320.60

Finding the Fourth Proportional to 31,458.68, 47,238.18 and 18,320.60

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Solution

The fourth proportional to 31,458.68, 47,238.18 and 18,320.60 is: 27,510.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,458.68 : 47,238.18 = 18,320.60 : x
  2. Step 2: Convert to fraction form
    31,458.68/47,238.18 = 18,320.60/x
  3. Step 3: Cross multiply
    31,458.68x = 47,238.18 × 18,320.60
  4. Step 4: Simplify right side
    31,458.68x = 865,431,800.51
  5. Step 5: Solve for x
    x = 865,431,800.51/31,458.68
  6. Step 6: Final answer
    x = 27,510.11

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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.