Home / 14,507.19-20,019.90-8,219.55

Finding the Fourth Proportional to 14,507.19, 20,019.90 and 8,219.55

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Solution

The fourth proportional to 14,507.19, 20,019.90 and 8,219.55 is: 11,342.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,507.19 : 20,019.90 = 8,219.55 : x
  2. Step 2: Convert to fraction form
    14,507.19/20,019.90 = 8,219.55/x
  3. Step 3: Cross multiply
    14,507.19x = 20,019.90 × 8,219.55
  4. Step 4: Simplify right side
    14,507.19x = 164,554,569.05
  5. Step 5: Solve for x
    x = 164,554,569.05/14,507.19
  6. Step 6: Final answer
    x = 11,342.97

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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.