Home / 15,245.69-21,036.53-8,959.28

Finding the Fourth Proportional to 15,245.69, 21,036.53 and 8,959.28

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Solution

The fourth proportional to 15,245.69, 21,036.53 and 8,959.28 is: 12,362.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,245.69 : 21,036.53 = 8,959.28 : x
  2. Step 2: Convert to fraction form
    15,245.69/21,036.53 = 8,959.28/x
  3. Step 3: Cross multiply
    15,245.69x = 21,036.53 × 8,959.28
  4. Step 4: Simplify right side
    15,245.69x = 188,472,117.70
  5. Step 5: Solve for x
    x = 188,472,117.70/15,245.69
  6. Step 6: Final answer
    x = 12,362.32

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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.