Home / 20,437.62-28,192.41-12,870.96

Finding the Fourth Proportional to 20,437.62, 28,192.41 and 12,870.96

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Solution

The fourth proportional to 20,437.62, 28,192.41 and 12,870.96 is: 17,754.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,437.62 : 28,192.41 = 12,870.96 : x
  2. Step 2: Convert to fraction form
    20,437.62/28,192.41 = 12,870.96/x
  3. Step 3: Cross multiply
    20,437.62x = 28,192.41 × 12,870.96
  4. Step 4: Simplify right side
    20,437.62x = 362,863,381.41
  5. Step 5: Solve for x
    x = 362,863,381.41/20,437.62
  6. Step 6: Final answer
    x = 17,754.68

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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.