Home / 12,424.47-17,136.81-7,117.35

Finding the Fourth Proportional to 12,424.47, 17,136.81 and 7,117.35

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Solution

The fourth proportional to 12,424.47, 17,136.81 and 7,117.35 is: 9,816.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,424.47 : 17,136.81 = 7,117.35 : x
  2. Step 2: Convert to fraction form
    12,424.47/17,136.81 = 7,117.35/x
  3. Step 3: Cross multiply
    12,424.47x = 17,136.81 × 7,117.35
  4. Step 4: Simplify right side
    12,424.47x = 121,968,674.65
  5. Step 5: Solve for x
    x = 121,968,674.65/12,424.47
  6. Step 6: Final answer
    x = 9,816.81

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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.