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Finding the Fourth Proportional to 12,681.40, 19,022.10 and 6,104.20

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Solution

The fourth proportional to 12,681.40, 19,022.10 and 6,104.20 is: 9,156.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.40 : 19,022.10 = 6,104.20 : x
  2. Step 2: Convert to fraction form
    12,681.40/19,022.10 = 6,104.20/x
  3. Step 3: Cross multiply
    12,681.40x = 19,022.10 × 6,104.20
  4. Step 4: Simplify right side
    12,681.40x = 116,114,702.82
  5. Step 5: Solve for x
    x = 116,114,702.82/12,681.40
  6. Step 6: Final answer
    x = 9,156.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.