Home / 31,510.12-47,281.56-20,413.92

Finding the Fourth Proportional to 31,510.12, 47,281.56 and 20,413.92

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Solution

The fourth proportional to 31,510.12, 47,281.56 and 20,413.92 is: 30,631.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,510.12 : 47,281.56 = 20,413.92 : x
  2. Step 2: Convert to fraction form
    31,510.12/47,281.56 = 20,413.92/x
  3. Step 3: Cross multiply
    31,510.12x = 47,281.56 × 20,413.92
  4. Step 4: Simplify right side
    31,510.12x = 965,201,983.32
  5. Step 5: Solve for x
    x = 965,201,983.32/31,510.12
  6. Step 6: Final answer
    x = 30,631.49

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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.