Home / 15,253.88-21,051.66-8,539.40

Finding the Fourth Proportional to 15,253.88, 21,051.66 and 8,539.40

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Solution

The fourth proportional to 15,253.88, 21,051.66 and 8,539.40 is: 11,785.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,253.88 : 21,051.66 = 8,539.40 : x
  2. Step 2: Convert to fraction form
    15,253.88/21,051.66 = 8,539.40/x
  3. Step 3: Cross multiply
    15,253.88x = 21,051.66 × 8,539.40
  4. Step 4: Simplify right side
    15,253.88x = 179,768,545.40
  5. Step 5: Solve for x
    x = 179,768,545.40/15,253.88
  6. Step 6: Final answer
    x = 11,785.10

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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.