Home / 31,989.68-47,740.18-28,490.48

Finding the Fourth Proportional to 31,989.68, 47,740.18 and 28,490.48

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Solution

The fourth proportional to 31,989.68, 47,740.18 and 28,490.48 is: 42,518.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,989.68 : 47,740.18 = 28,490.48 : x
  2. Step 2: Convert to fraction form
    31,989.68/47,740.18 = 28,490.48/x
  3. Step 3: Cross multiply
    31,989.68x = 47,740.18 × 28,490.48
  4. Step 4: Simplify right side
    31,989.68x = 1,360,140,643.49
  5. Step 5: Solve for x
    x = 1,360,140,643.49/31,989.68
  6. Step 6: Final answer
    x = 42,518.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.