Home / 11,271.80-15,545.64-8,445.81

Finding the Fourth Proportional to 11,271.80, 15,545.64 and 8,445.81

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Solution

The fourth proportional to 11,271.80, 15,545.64 and 8,445.81 is: 11,648.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,271.80 : 15,545.64 = 8,445.81 : x
  2. Step 2: Convert to fraction form
    11,271.80/15,545.64 = 8,445.81/x
  3. Step 3: Cross multiply
    11,271.80x = 15,545.64 × 8,445.81
  4. Step 4: Simplify right side
    11,271.80x = 131,295,521.77
  5. Step 5: Solve for x
    x = 131,295,521.77/11,271.80
  6. Step 6: Final answer
    x = 11,648.14

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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.