Home / 13,565.57-18,701.19-9,974.21

Finding the Fourth Proportional to 13,565.57, 18,701.19 and 9,974.21

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Solution

The fourth proportional to 13,565.57, 18,701.19 and 9,974.21 is: 13,750.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,565.57 : 18,701.19 = 9,974.21 : x
  2. Step 2: Convert to fraction form
    13,565.57/18,701.19 = 9,974.21/x
  3. Step 3: Cross multiply
    13,565.57x = 18,701.19 × 9,974.21
  4. Step 4: Simplify right side
    13,565.57x = 186,529,502.80
  5. Step 5: Solve for x
    x = 186,529,502.80/13,565.57
  6. Step 6: Final answer
    x = 13,750.22

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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.