Home / 28,543.80-42,811.92-12,957.84

Finding the Fourth Proportional to 28,543.80, 42,811.92 and 12,957.84

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Solution

The fourth proportional to 28,543.80, 42,811.92 and 12,957.84 is: 19,435.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.80 : 42,811.92 = 12,957.84 : x
  2. Step 2: Convert to fraction form
    28,543.80/42,811.92 = 12,957.84/x
  3. Step 3: Cross multiply
    28,543.80x = 42,811.92 × 12,957.84
  4. Step 4: Simplify right side
    28,543.80x = 554,750,009.45
  5. Step 5: Solve for x
    x = 554,750,009.45/28,543.80
  6. Step 6: Final answer
    x = 19,435.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.