Home / 20,526.52-28,333.88-12,143

Finding the Fourth Proportional to 20,526.52, 28,333.88 and 12,143

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Solution

The fourth proportional to 20,526.52, 28,333.88 and 12,143 is: 16,761.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,526.52 : 28,333.88 = 12,143 : x
  2. Step 2: Convert to fraction form
    20,526.52/28,333.88 = 12,143/x
  3. Step 3: Cross multiply
    20,526.52x = 28,333.88 × 12,143
  4. Step 4: Simplify right side
    20,526.52x = 344,058,304.84
  5. Step 5: Solve for x
    x = 344,058,304.84/20,526.52
  6. Step 6: Final answer
    x = 16,761.65

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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.