Home / 15,256.16-21,053.36-8,542.40

Finding the Fourth Proportional to 15,256.16, 21,053.36 and 8,542.40

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Solution

The fourth proportional to 15,256.16, 21,053.36 and 8,542.40 is: 11,788.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,256.16 : 21,053.36 = 8,542.40 : x
  2. Step 2: Convert to fraction form
    15,256.16/21,053.36 = 8,542.40/x
  3. Step 3: Cross multiply
    15,256.16x = 21,053.36 × 8,542.40
  4. Step 4: Simplify right side
    15,256.16x = 179,846,222.46
  5. Step 5: Solve for x
    x = 179,846,222.46/15,256.16
  6. Step 6: Final answer
    x = 11,788.43

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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.