Home / 15,438.30-21,308.93-10,659.03

Finding the Fourth Proportional to 15,438.30, 21,308.93 and 10,659.03

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Solution

The fourth proportional to 15,438.30, 21,308.93 and 10,659.03 is: 14,712.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438.30 : 21,308.93 = 10,659.03 : x
  2. Step 2: Convert to fraction form
    15,438.30/21,308.93 = 10,659.03/x
  3. Step 3: Cross multiply
    15,438.30x = 21,308.93 × 10,659.03
  4. Step 4: Simplify right side
    15,438.30x = 227,132,470.84
  5. Step 5: Solve for x
    x = 227,132,470.84/15,438.30
  6. Step 6: Final answer
    x = 14,712.27

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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.