Home / 15,380.01-21,227.13-14,678.81

Finding the Fourth Proportional to 15,380.01, 21,227.13 and 14,678.81

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Solution

The fourth proportional to 15,380.01, 21,227.13 and 14,678.81 is: 20,259.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,380.01 : 21,227.13 = 14,678.81 : x
  2. Step 2: Convert to fraction form
    15,380.01/21,227.13 = 14,678.81/x
  3. Step 3: Cross multiply
    15,380.01x = 21,227.13 × 14,678.81
  4. Step 4: Simplify right side
    15,380.01x = 311,589,008.12
  5. Step 5: Solve for x
    x = 311,589,008.12/15,380.01
  6. Step 6: Final answer
    x = 20,259.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.