Home / 15,255.10-21,051.02-8,539.59

Finding the Fourth Proportional to 15,255.10, 21,051.02 and 8,539.59

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Solution

The fourth proportional to 15,255.10, 21,051.02 and 8,539.59 is: 11,784.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,255.10 : 21,051.02 = 8,539.59 : x
  2. Step 2: Convert to fraction form
    15,255.10/21,051.02 = 8,539.59/x
  3. Step 3: Cross multiply
    15,255.10x = 21,051.02 × 8,539.59
  4. Step 4: Simplify right side
    15,255.10x = 179,767,180.17
  5. Step 5: Solve for x
    x = 179,767,180.17/15,255.10
  6. Step 6: Final answer
    x = 11,784.07

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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.