Home / 19,319.40-28,979.10-8,226.45

Finding the Fourth Proportional to 19,319.40, 28,979.10 and 8,226.45

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Solution

The fourth proportional to 19,319.40, 28,979.10 and 8,226.45 is: 12,339.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,319.40 : 28,979.10 = 8,226.45 : x
  2. Step 2: Convert to fraction form
    19,319.40/28,979.10 = 8,226.45/x
  3. Step 3: Cross multiply
    19,319.40x = 28,979.10 × 8,226.45
  4. Step 4: Simplify right side
    19,319.40x = 238,395,117.20
  5. Step 5: Solve for x
    x = 238,395,117.20/19,319.40
  6. Step 6: Final answer
    x = 12,339.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.