Home / 12,903.36-17,812.08-8,717.28

Finding the Fourth Proportional to 12,903.36, 17,812.08 and 8,717.28

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Solution

The fourth proportional to 12,903.36, 17,812.08 and 8,717.28 is: 12,033.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,903.36 : 17,812.08 = 8,717.28 : x
  2. Step 2: Convert to fraction form
    12,903.36/17,812.08 = 8,717.28/x
  3. Step 3: Cross multiply
    12,903.36x = 17,812.08 × 8,717.28
  4. Step 4: Simplify right side
    12,903.36x = 155,272,888.74
  5. Step 5: Solve for x
    x = 155,272,888.74/12,903.36
  6. Step 6: Final answer
    x = 12,033.52

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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.