Home / 31,920.02-47,763.39-18,778.58

Finding the Fourth Proportional to 31,920.02, 47,763.39 and 18,778.58

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Solution

The fourth proportional to 31,920.02, 47,763.39 and 18,778.58 is: 28,099.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,920.02 : 47,763.39 = 18,778.58 : x
  2. Step 2: Convert to fraction form
    31,920.02/47,763.39 = 18,778.58/x
  3. Step 3: Cross multiply
    31,920.02x = 47,763.39 × 18,778.58
  4. Step 4: Simplify right side
    31,920.02x = 896,928,830.01
  5. Step 5: Solve for x
    x = 896,928,830.01/31,920.02
  6. Step 6: Final answer
    x = 28,099.25

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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.