Home / 12,368.16-17,075.97-8,126.78

Finding the Fourth Proportional to 12,368.16, 17,075.97 and 8,126.78

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Solution

The fourth proportional to 12,368.16, 17,075.97 and 8,126.78 is: 11,220.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368.16 : 17,075.97 = 8,126.78 : x
  2. Step 2: Convert to fraction form
    12,368.16/17,075.97 = 8,126.78/x
  3. Step 3: Cross multiply
    12,368.16x = 17,075.97 × 8,126.78
  4. Step 4: Simplify right side
    12,368.16x = 138,772,566.10
  5. Step 5: Solve for x
    x = 138,772,566.10/12,368.16
  6. Step 6: Final answer
    x = 11,220.15

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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.