Home / 12,918.13-17,827.02-7,329.13

Finding the Fourth Proportional to 12,918.13, 17,827.02 and 7,329.13

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Solution

The fourth proportional to 12,918.13, 17,827.02 and 7,329.13 is: 10,114.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.13 : 17,827.02 = 7,329.13 : x
  2. Step 2: Convert to fraction form
    12,918.13/17,827.02 = 7,329.13/x
  3. Step 3: Cross multiply
    12,918.13x = 17,827.02 × 7,329.13
  4. Step 4: Simplify right side
    12,918.13x = 130,656,547.09
  5. Step 5: Solve for x
    x = 130,656,547.09/12,918.13
  6. Step 6: Final answer
    x = 10,114.20

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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.