Home / 15,255.95-21,053.72-8,541.86

Finding the Fourth Proportional to 15,255.95, 21,053.72 and 8,541.86

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Solution

The fourth proportional to 15,255.95, 21,053.72 and 8,541.86 is: 11,788.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,255.95 : 21,053.72 = 8,541.86 : x
  2. Step 2: Convert to fraction form
    15,255.95/21,053.72 = 8,541.86/x
  3. Step 3: Cross multiply
    15,255.95x = 21,053.72 × 8,541.86
  4. Step 4: Simplify right side
    15,255.95x = 179,837,844.81
  5. Step 5: Solve for x
    x = 179,837,844.81/15,255.95
  6. Step 6: Final answer
    x = 11,788.05

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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.