Home / 20,960.16-31,565.04-18,903.84

Finding the Fourth Proportional to 20,960.16, 31,565.04 and 18,903.84

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Solution

The fourth proportional to 20,960.16, 31,565.04 and 18,903.84 is: 28,468.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.16 : 31,565.04 = 18,903.84 : x
  2. Step 2: Convert to fraction form
    20,960.16/31,565.04 = 18,903.84/x
  3. Step 3: Cross multiply
    20,960.16x = 31,565.04 × 18,903.84
  4. Step 4: Simplify right side
    20,960.16x = 596,700,465.75
  5. Step 5: Solve for x
    x = 596,700,465.75/20,960.16
  6. Step 6: Final answer
    x = 28,468.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.