Home / 28,541.02-42,819.90-12,749.80

Finding the Fourth Proportional to 28,541.02, 42,819.90 and 12,749.80

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Solution

The fourth proportional to 28,541.02, 42,819.90 and 12,749.80 is: 19,128.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,541.02 : 42,819.90 = 12,749.80 : x
  2. Step 2: Convert to fraction form
    28,541.02/42,819.90 = 12,749.80/x
  3. Step 3: Cross multiply
    28,541.02x = 42,819.90 × 12,749.80
  4. Step 4: Simplify right side
    28,541.02x = 545,945,161.02
  5. Step 5: Solve for x
    x = 545,945,161.02/28,541.02
  6. Step 6: Final answer
    x = 19,128.44

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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.