Home / 20,376.66-30,568.23-8,689.98

Finding the Fourth Proportional to 20,376.66, 30,568.23 and 8,689.98

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Solution

The fourth proportional to 20,376.66, 30,568.23 and 8,689.98 is: 13,036.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376.66 : 30,568.23 = 8,689.98 : x
  2. Step 2: Convert to fraction form
    20,376.66/30,568.23 = 8,689.98/x
  3. Step 3: Cross multiply
    20,376.66x = 30,568.23 × 8,689.98
  4. Step 4: Simplify right side
    20,376.66x = 265,637,307.34
  5. Step 5: Solve for x
    x = 265,637,307.34/20,376.66
  6. Step 6: Final answer
    x = 13,036.35

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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.