Home / 15,341.40-21,172.19-8,536.29

Finding the Fourth Proportional to 15,341.40, 21,172.19 and 8,536.29

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Solution

The fourth proportional to 15,341.40, 21,172.19 and 8,536.29 is: 11,780.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,341.40 : 21,172.19 = 8,536.29 : x
  2. Step 2: Convert to fraction form
    15,341.40/21,172.19 = 8,536.29/x
  3. Step 3: Cross multiply
    15,341.40x = 21,172.19 × 8,536.29
  4. Step 4: Simplify right side
    15,341.40x = 180,731,831.70
  5. Step 5: Solve for x
    x = 180,731,831.70/15,341.40
  6. Step 6: Final answer
    x = 11,780.66

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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.