Home / 19,646.08-29,388.12-12,615.28

Finding the Fourth Proportional to 19,646.08, 29,388.12 and 12,615.28

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Solution

The fourth proportional to 19,646.08, 29,388.12 and 12,615.28 is: 18,870.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,646.08 : 29,388.12 = 12,615.28 : x
  2. Step 2: Convert to fraction form
    19,646.08/29,388.12 = 12,615.28/x
  3. Step 3: Cross multiply
    19,646.08x = 29,388.12 × 12,615.28
  4. Step 4: Simplify right side
    19,646.08x = 370,739,362.47
  5. Step 5: Solve for x
    x = 370,739,362.47/19,646.08
  6. Step 6: Final answer
    x = 18,870.91

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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.