Home / 10,291.17-14,211.90-8,790.33

Finding the Fourth Proportional to 10,291.17, 14,211.90 and 8,790.33

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Solution

The fourth proportional to 10,291.17, 14,211.90 and 8,790.33 is: 12,139.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,291.17 : 14,211.90 = 8,790.33 : x
  2. Step 2: Convert to fraction form
    10,291.17/14,211.90 = 8,790.33/x
  3. Step 3: Cross multiply
    10,291.17x = 14,211.90 × 8,790.33
  4. Step 4: Simplify right side
    10,291.17x = 124,927,290.93
  5. Step 5: Solve for x
    x = 124,927,290.93/10,291.17
  6. Step 6: Final answer
    x = 12,139.27

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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.