Home / 18,639.68-25,723.28-10,142.32

Finding the Fourth Proportional to 18,639.68, 25,723.28 and 10,142.32

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Solution

The fourth proportional to 18,639.68, 25,723.28 and 10,142.32 is: 13,996.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.68 : 25,723.28 = 10,142.32 : x
  2. Step 2: Convert to fraction form
    18,639.68/25,723.28 = 10,142.32/x
  3. Step 3: Cross multiply
    18,639.68x = 25,723.28 × 10,142.32
  4. Step 4: Simplify right side
    18,639.68x = 260,893,737.21
  5. Step 5: Solve for x
    x = 260,893,737.21/18,639.68
  6. Step 6: Final answer
    x = 13,996.69

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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.