Home / 13,981.35-19,292.07-8,316.30

Finding the Fourth Proportional to 13,981.35, 19,292.07 and 8,316.30

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Solution

The fourth proportional to 13,981.35, 19,292.07 and 8,316.30 is: 11,475.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,981.35 : 19,292.07 = 8,316.30 : x
  2. Step 2: Convert to fraction form
    13,981.35/19,292.07 = 8,316.30/x
  3. Step 3: Cross multiply
    13,981.35x = 19,292.07 × 8,316.30
  4. Step 4: Simplify right side
    13,981.35x = 160,438,641.74
  5. Step 5: Solve for x
    x = 160,438,641.74/13,981.35
  6. Step 6: Final answer
    x = 11,475.19

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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.