Home / 28,681.65-39,584.97-20,641.92

Finding the Fourth Proportional to 28,681.65, 39,584.97 and 20,641.92

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Solution

The fourth proportional to 28,681.65, 39,584.97 and 20,641.92 is: 28,488.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,681.65 : 39,584.97 = 20,641.92 : x
  2. Step 2: Convert to fraction form
    28,681.65/39,584.97 = 20,641.92/x
  3. Step 3: Cross multiply
    28,681.65x = 39,584.97 × 20,641.92
  4. Step 4: Simplify right side
    28,681.65x = 817,109,783.94
  5. Step 5: Solve for x
    x = 817,109,783.94/28,681.65
  6. Step 6: Final answer
    x = 28,488.94

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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.