Home / 12,686.98-19,031.75-4,365.90

Finding the Fourth Proportional to 12,686.98, 19,031.75 and 4,365.90

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Solution

The fourth proportional to 12,686.98, 19,031.75 and 4,365.90 is: 6,549.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686.98 : 19,031.75 = 4,365.90 : x
  2. Step 2: Convert to fraction form
    12,686.98/19,031.75 = 4,365.90/x
  3. Step 3: Cross multiply
    12,686.98x = 19,031.75 × 4,365.90
  4. Step 4: Simplify right side
    12,686.98x = 83,090,705.73
  5. Step 5: Solve for x
    x = 83,090,705.73/12,686.98
  6. Step 6: Final answer
    x = 6,549.29

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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.