Home / 15,673.87-21,630.36-8,867.35

Finding the Fourth Proportional to 15,673.87, 21,630.36 and 8,867.35

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Solution

The fourth proportional to 15,673.87, 21,630.36 and 8,867.35 is: 12,237.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,673.87 : 21,630.36 = 8,867.35 : x
  2. Step 2: Convert to fraction form
    15,673.87/21,630.36 = 8,867.35/x
  3. Step 3: Cross multiply
    15,673.87x = 21,630.36 × 8,867.35
  4. Step 4: Simplify right side
    15,673.87x = 191,803,972.75
  5. Step 5: Solve for x
    x = 191,803,972.75/15,673.87
  6. Step 6: Final answer
    x = 12,237.18

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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.