Home / 15,823.12-21,836.28-8,749.68

Finding the Fourth Proportional to 15,823.12, 21,836.28 and 8,749.68

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Solution

The fourth proportional to 15,823.12, 21,836.28 and 8,749.68 is: 12,074.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,823.12 : 21,836.28 = 8,749.68 : x
  2. Step 2: Convert to fraction form
    15,823.12/21,836.28 = 8,749.68/x
  3. Step 3: Cross multiply
    15,823.12x = 21,836.28 × 8,749.68
  4. Step 4: Simplify right side
    15,823.12x = 191,060,462.39
  5. Step 5: Solve for x
    x = 191,060,462.39/15,823.12
  6. Step 6: Final answer
    x = 12,074.77

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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.