Home / 15,388.58-21,222.15-10,086.32

Finding the Fourth Proportional to 15,388.58, 21,222.15 and 10,086.32

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Solution

The fourth proportional to 15,388.58, 21,222.15 and 10,086.32 is: 13,909.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,388.58 : 21,222.15 = 10,086.32 : x
  2. Step 2: Convert to fraction form
    15,388.58/21,222.15 = 10,086.32/x
  3. Step 3: Cross multiply
    15,388.58x = 21,222.15 × 10,086.32
  4. Step 4: Simplify right side
    15,388.58x = 214,053,395.99
  5. Step 5: Solve for x
    x = 214,053,395.99/15,388.58
  6. Step 6: Final answer
    x = 13,909.89

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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.