Home / 20,904.72-28,823.88-16,913.52

Finding the Fourth Proportional to 20,904.72, 28,823.88 and 16,913.52

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Solution

The fourth proportional to 20,904.72, 28,823.88 and 16,913.52 is: 23,320.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.72 : 28,823.88 = 16,913.52 : x
  2. Step 2: Convert to fraction form
    20,904.72/28,823.88 = 16,913.52/x
  3. Step 3: Cross multiply
    20,904.72x = 28,823.88 × 16,913.52
  4. Step 4: Simplify right side
    20,904.72x = 487,513,270.86
  5. Step 5: Solve for x
    x = 487,513,270.86/20,904.72
  6. Step 6: Final answer
    x = 23,320.73

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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.