Home / 15,842.93-21,840.69-10,800.68

Finding the Fourth Proportional to 15,842.93, 21,840.69 and 10,800.68

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Solution

The fourth proportional to 15,842.93, 21,840.69 and 10,800.68 is: 14,889.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,842.93 : 21,840.69 = 10,800.68 : x
  2. Step 2: Convert to fraction form
    15,842.93/21,840.69 = 10,800.68/x
  3. Step 3: Cross multiply
    15,842.93x = 21,840.69 × 10,800.68
  4. Step 4: Simplify right side
    15,842.93x = 235,894,234.97
  5. Step 5: Solve for x
    x = 235,894,234.97/15,842.93
  6. Step 6: Final answer
    x = 14,889.56

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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.