Home / 12,365.11-17,065.34-6,987.79

Finding the Fourth Proportional to 12,365.11, 17,065.34 and 6,987.79

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Solution

The fourth proportional to 12,365.11, 17,065.34 and 6,987.79 is: 9,643.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,365.11 : 17,065.34 = 6,987.79 : x
  2. Step 2: Convert to fraction form
    12,365.11/17,065.34 = 6,987.79/x
  3. Step 3: Cross multiply
    12,365.11x = 17,065.34 × 6,987.79
  4. Step 4: Simplify right side
    12,365.11x = 119,249,012.20
  5. Step 5: Solve for x
    x = 119,249,012.20/12,365.11
  6. Step 6: Final answer
    x = 9,643.99

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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.