Home / 35,386.40-48,833.64-20,278.76

Finding the Fourth Proportional to 35,386.40, 48,833.64 and 20,278.76

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Solution

The fourth proportional to 35,386.40, 48,833.64 and 20,278.76 is: 27,984.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,386.40 : 48,833.64 = 20,278.76 : x
  2. Step 2: Convert to fraction form
    35,386.40/48,833.64 = 20,278.76/x
  3. Step 3: Cross multiply
    35,386.40x = 48,833.64 × 20,278.76
  4. Step 4: Simplify right side
    35,386.40x = 990,285,665.49
  5. Step 5: Solve for x
    x = 990,285,665.49/35,386.40
  6. Step 6: Final answer
    x = 27,984.92

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Double scale
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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.