Home / 15,087.40-20,828.10-9,425.29

Finding the Fourth Proportional to 15,087.40, 20,828.10 and 9,425.29

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Solution

The fourth proportional to 15,087.40, 20,828.10 and 9,425.29 is: 13,011.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,087.40 : 20,828.10 = 9,425.29 : x
  2. Step 2: Convert to fraction form
    15,087.40/20,828.10 = 9,425.29/x
  3. Step 3: Cross multiply
    15,087.40x = 20,828.10 × 9,425.29
  4. Step 4: Simplify right side
    15,087.40x = 196,310,806.63
  5. Step 5: Solve for x
    x = 196,310,806.63/15,087.40
  6. Step 6: Final answer
    x = 13,011.58

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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.