Home / 15,920.18-21,970.36-8,847.06

Finding the Fourth Proportional to 15,920.18, 21,970.36 and 8,847.06

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Solution

The fourth proportional to 15,920.18, 21,970.36 and 8,847.06 is: 12,209.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,920.18 : 21,970.36 = 8,847.06 : x
  2. Step 2: Convert to fraction form
    15,920.18/21,970.36 = 8,847.06/x
  3. Step 3: Cross multiply
    15,920.18x = 21,970.36 × 8,847.06
  4. Step 4: Simplify right side
    15,920.18x = 194,373,093.14
  5. Step 5: Solve for x
    x = 194,373,093.14/15,920.18
  6. Step 6: Final answer
    x = 12,209.23

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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.