Home / 12,615.12-17,407.14-7,509.84

Finding the Fourth Proportional to 12,615.12, 17,407.14 and 7,509.84

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Solution

The fourth proportional to 12,615.12, 17,407.14 and 7,509.84 is: 10,362.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.12 : 17,407.14 = 7,509.84 : x
  2. Step 2: Convert to fraction form
    12,615.12/17,407.14 = 7,509.84/x
  3. Step 3: Cross multiply
    12,615.12x = 17,407.14 × 7,509.84
  4. Step 4: Simplify right side
    12,615.12x = 130,724,836.26
  5. Step 5: Solve for x
    x = 130,724,836.26/12,615.12
  6. Step 6: Final answer
    x = 10,362.55

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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.