Home / 10,290.91-14,211.54-8,790.08

Finding the Fourth Proportional to 10,290.91, 14,211.54 and 8,790.08

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Solution

The fourth proportional to 10,290.91, 14,211.54 and 8,790.08 is: 12,138.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,290.91 : 14,211.54 = 8,790.08 : x
  2. Step 2: Convert to fraction form
    10,290.91/14,211.54 = 8,790.08/x
  3. Step 3: Cross multiply
    10,290.91x = 14,211.54 × 8,790.08
  4. Step 4: Simplify right side
    10,290.91x = 124,920,567.16
  5. Step 5: Solve for x
    x = 124,920,567.16/10,290.91
  6. Step 6: Final answer
    x = 12,138.93

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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.