Home / 32,787.36-45,242.28-18,639.90

Finding the Fourth Proportional to 32,787.36, 45,242.28 and 18,639.90

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Solution

The fourth proportional to 32,787.36, 45,242.28 and 18,639.90 is: 25,720.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,787.36 : 45,242.28 = 18,639.90 : x
  2. Step 2: Convert to fraction form
    32,787.36/45,242.28 = 18,639.90/x
  3. Step 3: Cross multiply
    32,787.36x = 45,242.28 × 18,639.90
  4. Step 4: Simplify right side
    32,787.36x = 843,311,574.97
  5. Step 5: Solve for x
    x = 843,311,574.97/32,787.36
  6. Step 6: Final answer
    x = 25,720.63

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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.