Home / 15,852.45-21,874.28-8,777.91

Finding the Fourth Proportional to 15,852.45, 21,874.28 and 8,777.91

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Solution

The fourth proportional to 15,852.45, 21,874.28 and 8,777.91 is: 12,112.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,852.45 : 21,874.28 = 8,777.91 : x
  2. Step 2: Convert to fraction form
    15,852.45/21,874.28 = 8,777.91/x
  3. Step 3: Cross multiply
    15,852.45x = 21,874.28 × 8,777.91
  4. Step 4: Simplify right side
    15,852.45x = 192,010,417.27
  5. Step 5: Solve for x
    x = 192,010,417.27/15,852.45
  6. Step 6: Final answer
    x = 12,112.35

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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.