Home / 12,795.45-17,656.51-7,129.62

Finding the Fourth Proportional to 12,795.45, 17,656.51 and 7,129.62

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Solution

The fourth proportional to 12,795.45, 17,656.51 and 7,129.62 is: 9,838.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.45 : 17,656.51 = 7,129.62 : x
  2. Step 2: Convert to fraction form
    12,795.45/17,656.51 = 7,129.62/x
  3. Step 3: Cross multiply
    12,795.45x = 17,656.51 × 7,129.62
  4. Step 4: Simplify right side
    12,795.45x = 125,884,206.83
  5. Step 5: Solve for x
    x = 125,884,206.83/12,795.45
  6. Step 6: Final answer
    x = 9,838.20

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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.