Home / 10,001.78-15,005.91-4,808.06

Finding the Fourth Proportional to 10,001.78, 15,005.91 and 4,808.06

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Solution

The fourth proportional to 10,001.78, 15,005.91 and 4,808.06 is: 7,213.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,001.78 : 15,005.91 = 4,808.06 : x
  2. Step 2: Convert to fraction form
    10,001.78/15,005.91 = 4,808.06/x
  3. Step 3: Cross multiply
    10,001.78x = 15,005.91 × 4,808.06
  4. Step 4: Simplify right side
    10,001.78x = 72,149,315.63
  5. Step 5: Solve for x
    x = 72,149,315.63/10,001.78
  6. Step 6: Final answer
    x = 7,213.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.