Home / 20,526.96-28,329.17-12,871.46

Finding the Fourth Proportional to 20,526.96, 28,329.17 and 12,871.46

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Solution

The fourth proportional to 20,526.96, 28,329.17 and 12,871.46 is: 17,763.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,526.96 : 28,329.17 = 12,871.46 : x
  2. Step 2: Convert to fraction form
    20,526.96/28,329.17 = 12,871.46/x
  3. Step 3: Cross multiply
    20,526.96x = 28,329.17 × 12,871.46
  4. Step 4: Simplify right side
    20,526.96x = 364,637,620.75
  5. Step 5: Solve for x
    x = 364,637,620.75/20,526.96
  6. Step 6: Final answer
    x = 17,763.84

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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.