Home / 12,918.02-17,827.18-7,329.02

Finding the Fourth Proportional to 12,918.02, 17,827.18 and 7,329.02

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Solution

The fourth proportional to 12,918.02, 17,827.18 and 7,329.02 is: 10,114.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.02 : 17,827.18 = 7,329.02 : x
  2. Step 2: Convert to fraction form
    12,918.02/17,827.18 = 7,329.02/x
  3. Step 3: Cross multiply
    12,918.02x = 17,827.18 × 7,329.02
  4. Step 4: Simplify right side
    12,918.02x = 130,655,758.76
  5. Step 5: Solve for x
    x = 130,655,758.76/12,918.02
  6. Step 6: Final answer
    x = 10,114.22

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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.