Home / 15,829.84-21,845.73-8,756.92

Finding the Fourth Proportional to 15,829.84, 21,845.73 and 8,756.92

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Solution

The fourth proportional to 15,829.84, 21,845.73 and 8,756.92 is: 12,084.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,829.84 : 21,845.73 = 8,756.92 : x
  2. Step 2: Convert to fraction form
    15,829.84/21,845.73 = 8,756.92/x
  3. Step 3: Cross multiply
    15,829.84x = 21,845.73 × 8,756.92
  4. Step 4: Simplify right side
    15,829.84x = 191,301,309.95
  5. Step 5: Solve for x
    x = 191,301,309.95/15,829.84
  6. Step 6: Final answer
    x = 12,084.85

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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.