Home / 15,275.51-21,081.56-8,901.75

Finding the Fourth Proportional to 15,275.51, 21,081.56 and 8,901.75

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Solution

The fourth proportional to 15,275.51, 21,081.56 and 8,901.75 is: 12,285.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,275.51 : 21,081.56 = 8,901.75 : x
  2. Step 2: Convert to fraction form
    15,275.51/21,081.56 = 8,901.75/x
  3. Step 3: Cross multiply
    15,275.51x = 21,081.56 × 8,901.75
  4. Step 4: Simplify right side
    15,275.51x = 187,662,732.22
  5. Step 5: Solve for x
    x = 187,662,732.22/15,275.51
  6. Step 6: Final answer
    x = 12,285.21

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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.