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Finding the Fourth Proportional to 26,959.68, 40,428.48 and 15,888.48

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Solution

The fourth proportional to 26,959.68, 40,428.48 and 15,888.48 is: 23,826.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,959.68 : 40,428.48 = 15,888.48 : x
  2. Step 2: Convert to fraction form
    26,959.68/40,428.48 = 15,888.48/x
  3. Step 3: Cross multiply
    26,959.68x = 40,428.48 × 15,888.48
  4. Step 4: Simplify right side
    26,959.68x = 642,347,095.91
  5. Step 5: Solve for x
    x = 642,347,095.91/26,959.68
  6. Step 6: Final answer
    x = 23,826.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.