Home / 22,018.08-30,374.88-15,319.68

Finding the Fourth Proportional to 22,018.08, 30,374.88 and 15,319.68

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Solution

The fourth proportional to 22,018.08, 30,374.88 and 15,319.68 is: 21,134.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,018.08 : 30,374.88 = 15,319.68 : x
  2. Step 2: Convert to fraction form
    22,018.08/30,374.88 = 15,319.68/x
  3. Step 3: Cross multiply
    22,018.08x = 30,374.88 × 15,319.68
  4. Step 4: Simplify right side
    22,018.08x = 465,333,441.64
  5. Step 5: Solve for x
    x = 465,333,441.64/22,018.08
  6. Step 6: Final answer
    x = 21,134.15

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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.