Home / 12,886.24-19,329.26-7,657.49

Finding the Fourth Proportional to 12,886.24, 19,329.26 and 7,657.49

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Solution

The fourth proportional to 12,886.24, 19,329.26 and 7,657.49 is: 11,486.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,886.24 : 19,329.26 = 7,657.49 : x
  2. Step 2: Convert to fraction form
    12,886.24/19,329.26 = 7,657.49/x
  3. Step 3: Cross multiply
    12,886.24x = 19,329.26 × 7,657.49
  4. Step 4: Simplify right side
    12,886.24x = 148,013,538.00
  5. Step 5: Solve for x
    x = 148,013,538.00/12,886.24
  6. Step 6: Final answer
    x = 11,486.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.