Home / 26,109.68-36,039.13-20,802.56

Finding the Fourth Proportional to 26,109.68, 36,039.13 and 20,802.56

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Solution

The fourth proportional to 26,109.68, 36,039.13 and 20,802.56 is: 28,713.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,109.68 : 36,039.13 = 20,802.56 : x
  2. Step 2: Convert to fraction form
    26,109.68/36,039.13 = 20,802.56/x
  3. Step 3: Cross multiply
    26,109.68x = 36,039.13 × 20,802.56
  4. Step 4: Simplify right side
    26,109.68x = 749,705,931.97
  5. Step 5: Solve for x
    x = 749,705,931.97/26,109.68
  6. Step 6: Final answer
    x = 28,713.72

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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.