Home / 15,100.29-20,837.70-8,386.35

Finding the Fourth Proportional to 15,100.29, 20,837.70 and 8,386.35

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Solution

The fourth proportional to 15,100.29, 20,837.70 and 8,386.35 is: 11,572.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,100.29 : 20,837.70 = 8,386.35 : x
  2. Step 2: Convert to fraction form
    15,100.29/20,837.70 = 8,386.35/x
  3. Step 3: Cross multiply
    15,100.29x = 20,837.70 × 8,386.35
  4. Step 4: Simplify right side
    15,100.29x = 174,752,203.46
  5. Step 5: Solve for x
    x = 174,752,203.46/15,100.29
  6. Step 6: Final answer
    x = 11,572.77

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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.