Home / 15,291.59-21,104.75-8,579.93

Finding the Fourth Proportional to 15,291.59, 21,104.75 and 8,579.93

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Solution

The fourth proportional to 15,291.59, 21,104.75 and 8,579.93 is: 11,841.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,291.59 : 21,104.75 = 8,579.93 : x
  2. Step 2: Convert to fraction form
    15,291.59/21,104.75 = 8,579.93/x
  3. Step 3: Cross multiply
    15,291.59x = 21,104.75 × 8,579.93
  4. Step 4: Simplify right side
    15,291.59x = 181,077,193.59
  5. Step 5: Solve for x
    x = 181,077,193.59/15,291.59
  6. Step 6: Final answer
    x = 11,841.62

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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.