Home / 28,416.61-39,214.16-15,669.57

Finding the Fourth Proportional to 28,416.61, 39,214.16 and 15,669.57

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Solution

The fourth proportional to 28,416.61, 39,214.16 and 15,669.57 is: 21,623.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,416.61 : 39,214.16 = 15,669.57 : x
  2. Step 2: Convert to fraction form
    28,416.61/39,214.16 = 15,669.57/x
  3. Step 3: Cross multiply
    28,416.61x = 39,214.16 × 15,669.57
  4. Step 4: Simplify right side
    28,416.61x = 614,469,025.11
  5. Step 5: Solve for x
    x = 614,469,025.11/28,416.61
  6. Step 6: Final answer
    x = 21,623.59

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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.