Home / 15,720.01-21,693.90-8,550.07

Finding the Fourth Proportional to 15,720.01, 21,693.90 and 8,550.07

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Solution

The fourth proportional to 15,720.01, 21,693.90 and 8,550.07 is: 11,799.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,720.01 : 21,693.90 = 8,550.07 : x
  2. Step 2: Convert to fraction form
    15,720.01/21,693.90 = 8,550.07/x
  3. Step 3: Cross multiply
    15,720.01x = 21,693.90 × 8,550.07
  4. Step 4: Simplify right side
    15,720.01x = 185,484,363.57
  5. Step 5: Solve for x
    x = 185,484,363.57/15,720.01
  6. Step 6: Final answer
    x = 11,799.25

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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.