Home / 31,500.83-47,250.23-12,780.41

Finding the Fourth Proportional to 31,500.83, 47,250.23 and 12,780.41

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Solution

The fourth proportional to 31,500.83, 47,250.23 and 12,780.41 is: 19,170.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,500.83 : 47,250.23 = 12,780.41 : x
  2. Step 2: Convert to fraction form
    31,500.83/47,250.23 = 12,780.41/x
  3. Step 3: Cross multiply
    31,500.83x = 47,250.23 × 12,780.41
  4. Step 4: Simplify right side
    31,500.83x = 603,877,011.84
  5. Step 5: Solve for x
    x = 603,877,011.84/31,500.83
  6. Step 6: Final answer
    x = 19,170.19

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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.