Home / 15,308.12-21,122.69-9,019.64

Finding the Fourth Proportional to 15,308.12, 21,122.69 and 9,019.64

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Solution

The fourth proportional to 15,308.12, 21,122.69 and 9,019.64 is: 12,445.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,308.12 : 21,122.69 = 9,019.64 : x
  2. Step 2: Convert to fraction form
    15,308.12/21,122.69 = 9,019.64/x
  3. Step 3: Cross multiply
    15,308.12x = 21,122.69 × 9,019.64
  4. Step 4: Simplify right side
    15,308.12x = 190,519,059.63
  5. Step 5: Solve for x
    x = 190,519,059.63/15,308.12
  6. Step 6: Final answer
    x = 12,445.62

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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.