Home / 15,355.60-21,189.96-9,388.24

Finding the Fourth Proportional to 15,355.60, 21,189.96 and 9,388.24

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Solution

The fourth proportional to 15,355.60, 21,189.96 and 9,388.24 is: 12,955.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,355.60 : 21,189.96 = 9,388.24 : x
  2. Step 2: Convert to fraction form
    15,355.60/21,189.96 = 9,388.24/x
  3. Step 3: Cross multiply
    15,355.60x = 21,189.96 × 9,388.24
  4. Step 4: Simplify right side
    15,355.60x = 198,936,430.07
  5. Step 5: Solve for x
    x = 198,936,430.07/15,355.60
  6. Step 6: Final answer
    x = 12,955.30

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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.