Home / 28,628.22-39,507.04-15,881.65

Finding the Fourth Proportional to 28,628.22, 39,507.04 and 15,881.65

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Solution

The fourth proportional to 28,628.22, 39,507.04 and 15,881.65 is: 21,916.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,628.22 : 39,507.04 = 15,881.65 : x
  2. Step 2: Convert to fraction form
    28,628.22/39,507.04 = 15,881.65/x
  3. Step 3: Cross multiply
    28,628.22x = 39,507.04 × 15,881.65
  4. Step 4: Simplify right side
    28,628.22x = 627,437,125.13
  5. Step 5: Solve for x
    x = 627,437,125.13/28,628.22
  6. Step 6: Final answer
    x = 21,916.74

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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.