Home / 28,368.60-39,149.63-15,623.12

Finding the Fourth Proportional to 28,368.60, 39,149.63 and 15,623.12

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Solution

The fourth proportional to 28,368.60, 39,149.63 and 15,623.12 is: 21,560.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,368.60 : 39,149.63 = 15,623.12 : x
  2. Step 2: Convert to fraction form
    28,368.60/39,149.63 = 15,623.12/x
  3. Step 3: Cross multiply
    28,368.60x = 39,149.63 × 15,623.12
  4. Step 4: Simplify right side
    28,368.60x = 611,639,093.58
  5. Step 5: Solve for x
    x = 611,639,093.58/28,368.60
  6. Step 6: Final answer
    x = 21,560.43

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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.