Home / 20,547.90-28,355.67-12,167.10

Finding the Fourth Proportional to 20,547.90, 28,355.67 and 12,167.10

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Solution

The fourth proportional to 20,547.90, 28,355.67 and 12,167.10 is: 16,790.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,547.90 : 28,355.67 = 12,167.10 : x
  2. Step 2: Convert to fraction form
    20,547.90/28,355.67 = 12,167.10/x
  3. Step 3: Cross multiply
    20,547.90x = 28,355.67 × 12,167.10
  4. Step 4: Simplify right side
    20,547.90x = 345,006,272.46
  5. Step 5: Solve for x
    x = 345,006,272.46/20,547.90
  6. Step 6: Final answer
    x = 16,790.34

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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.