Home / 31,918.80-47,820.60-28,232.40

Finding the Fourth Proportional to 31,918.80, 47,820.60 and 28,232.40

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Solution

The fourth proportional to 31,918.80, 47,820.60 and 28,232.40 is: 42,297.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,918.80 : 47,820.60 = 28,232.40 : x
  2. Step 2: Convert to fraction form
    31,918.80/47,820.60 = 28,232.40/x
  3. Step 3: Cross multiply
    31,918.80x = 47,820.60 × 28,232.40
  4. Step 4: Simplify right side
    31,918.80x = 1,350,090,307.44
  5. Step 5: Solve for x
    x = 1,350,090,307.44/31,918.80
  6. Step 6: Final answer
    x = 42,297.65

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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.