Home / 28,540.02-42,818.40-12,748.80

Finding the Fourth Proportional to 28,540.02, 42,818.40 and 12,748.80

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Solution

The fourth proportional to 28,540.02, 42,818.40 and 12,748.80 is: 19,126.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,540.02 : 42,818.40 = 12,748.80 : x
  2. Step 2: Convert to fraction form
    28,540.02/42,818.40 = 12,748.80/x
  3. Step 3: Cross multiply
    28,540.02x = 42,818.40 × 12,748.80
  4. Step 4: Simplify right side
    28,540.02x = 545,883,217.92
  5. Step 5: Solve for x
    x = 545,883,217.92/28,540.02
  6. Step 6: Final answer
    x = 19,126.94

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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.