Home / 20,960.37-28,925.02-11,400.05

Finding the Fourth Proportional to 20,960.37, 28,925.02 and 11,400.05

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Solution

The fourth proportional to 20,960.37, 28,925.02 and 11,400.05 is: 15,731.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.37 : 28,925.02 = 11,400.05 : x
  2. Step 2: Convert to fraction form
    20,960.37/28,925.02 = 11,400.05/x
  3. Step 3: Cross multiply
    20,960.37x = 28,925.02 × 11,400.05
  4. Step 4: Simplify right side
    20,960.37x = 329,746,652.34
  5. Step 5: Solve for x
    x = 329,746,652.34/20,960.37
  6. Step 6: Final answer
    x = 15,731.91

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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.