Home / 11,620.78-16,036.40-6,315.46

Finding the Fourth Proportional to 11,620.78, 16,036.40 and 6,315.46

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Solution

The fourth proportional to 11,620.78, 16,036.40 and 6,315.46 is: 8,715.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,620.78 : 16,036.40 = 6,315.46 : x
  2. Step 2: Convert to fraction form
    11,620.78/16,036.40 = 6,315.46/x
  3. Step 3: Cross multiply
    11,620.78x = 16,036.40 × 6,315.46
  4. Step 4: Simplify right side
    11,620.78x = 101,277,242.74
  5. Step 5: Solve for x
    x = 101,277,242.74/11,620.78
  6. Step 6: Final answer
    x = 8,715.18

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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.