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Finding the Fourth Proportional to 15,053.36, 20,774.46 and 8,339.78

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Solution

The fourth proportional to 15,053.36, 20,774.46 and 8,339.78 is: 11,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,053.36 : 20,774.46 = 8,339.78 : x
  2. Step 2: Convert to fraction form
    15,053.36/20,774.46 = 8,339.78/x
  3. Step 3: Cross multiply
    15,053.36x = 20,774.46 × 8,339.78
  4. Step 4: Simplify right side
    15,053.36x = 173,254,426.02
  5. Step 5: Solve for x
    x = 173,254,426.02/15,053.36
  6. Step 6: Final answer
    x = 11,509.35

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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.