Home / 14,129.02-21,166.19-12,680.13

Finding the Fourth Proportional to 14,129.02, 21,166.19 and 12,680.13

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Solution

The fourth proportional to 14,129.02, 21,166.19 and 12,680.13 is: 18,995.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,129.02 : 21,166.19 = 12,680.13 : x
  2. Step 2: Convert to fraction form
    14,129.02/21,166.19 = 12,680.13/x
  3. Step 3: Cross multiply
    14,129.02x = 21,166.19 × 12,680.13
  4. Step 4: Simplify right side
    14,129.02x = 268,390,040.80
  5. Step 5: Solve for x
    x = 268,390,040.80/14,129.02
  6. Step 6: Final answer
    x = 18,995.66

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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.