Home / 12,478.02-18,712.26-4,156.44

Finding the Fourth Proportional to 12,478.02, 18,712.26 and 4,156.44

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Solution

The fourth proportional to 12,478.02, 18,712.26 and 4,156.44 is: 6,233.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.02 : 18,712.26 = 4,156.44 : x
  2. Step 2: Convert to fraction form
    12,478.02/18,712.26 = 4,156.44/x
  3. Step 3: Cross multiply
    12,478.02x = 18,712.26 × 4,156.44
  4. Step 4: Simplify right side
    12,478.02x = 77,776,385.95
  5. Step 5: Solve for x
    x = 77,776,385.95/12,478.02
  6. Step 6: Final answer
    x = 6,233.07

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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.