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Finding the Fourth Proportional to 25,959.76, 35,836.04 and 19,989.20

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Solution

The fourth proportional to 25,959.76, 35,836.04 and 19,989.20 is: 27,594.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,959.76 : 35,836.04 = 19,989.20 : x
  2. Step 2: Convert to fraction form
    25,959.76/35,836.04 = 19,989.20/x
  3. Step 3: Cross multiply
    25,959.76x = 35,836.04 × 19,989.20
  4. Step 4: Simplify right side
    25,959.76x = 716,333,770.77
  5. Step 5: Solve for x
    x = 716,333,770.77/25,959.76
  6. Step 6: Final answer
    x = 27,594.01

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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.