Home / 20,312.96-30,472.92-6,985.35

Finding the Fourth Proportional to 20,312.96, 30,472.92 and 6,985.35

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Solution

The fourth proportional to 20,312.96, 30,472.92 and 6,985.35 is: 10,479.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,312.96 : 30,472.92 = 6,985.35 : x
  2. Step 2: Convert to fraction form
    20,312.96/30,472.92 = 6,985.35/x
  3. Step 3: Cross multiply
    20,312.96x = 30,472.92 × 6,985.35
  4. Step 4: Simplify right side
    20,312.96x = 212,864,011.72
  5. Step 5: Solve for x
    x = 212,864,011.72/20,312.96
  6. Step 6: Final answer
    x = 10,479.22

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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.