Home / 10,135.26-13,975.38-8,717.40

Finding the Fourth Proportional to 10,135.26, 13,975.38 and 8,717.40

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Solution

The fourth proportional to 10,135.26, 13,975.38 and 8,717.40 is: 12,020.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,135.26 : 13,975.38 = 8,717.40 : x
  2. Step 2: Convert to fraction form
    10,135.26/13,975.38 = 8,717.40/x
  3. Step 3: Cross multiply
    10,135.26x = 13,975.38 × 8,717.40
  4. Step 4: Simplify right side
    10,135.26x = 121,828,977.61
  5. Step 5: Solve for x
    x = 121,828,977.61/10,135.26
  6. Step 6: Final answer
    x = 12,020.31

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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.