Home / 15,417.72-21,276.42-8,704.74

Finding the Fourth Proportional to 15,417.72, 21,276.42 and 8,704.74

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Solution

The fourth proportional to 15,417.72, 21,276.42 and 8,704.74 is: 12,012.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.72 : 21,276.42 = 8,704.74 : x
  2. Step 2: Convert to fraction form
    15,417.72/21,276.42 = 8,704.74/x
  3. Step 3: Cross multiply
    15,417.72x = 21,276.42 × 8,704.74
  4. Step 4: Simplify right side
    15,417.72x = 185,205,704.23
  5. Step 5: Solve for x
    x = 185,205,704.23/15,417.72
  6. Step 6: Final answer
    x = 12,012.52

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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.