Home / 31,800.57-47,700.84-18,645.76

Finding the Fourth Proportional to 31,800.57, 47,700.84 and 18,645.76

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Solution

The fourth proportional to 31,800.57, 47,700.84 and 18,645.76 is: 27,968.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,800.57 : 47,700.84 = 18,645.76 : x
  2. Step 2: Convert to fraction form
    31,800.57/47,700.84 = 18,645.76/x
  3. Step 3: Cross multiply
    31,800.57x = 47,700.84 × 18,645.76
  4. Step 4: Simplify right side
    31,800.57x = 889,418,543.99
  5. Step 5: Solve for x
    x = 889,418,543.99/31,800.57
  6. Step 6: Final answer
    x = 27,968.64

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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.