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Finding the Fourth Proportional to 19,641.47, 29,462.51 and 18,644.56

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Solution

The fourth proportional to 19,641.47, 29,462.51 and 18,644.56 is: 27,967.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,641.47 : 29,462.51 = 18,644.56 : x
  2. Step 2: Convert to fraction form
    19,641.47/29,462.51 = 18,644.56/x
  3. Step 3: Cross multiply
    19,641.47x = 29,462.51 × 18,644.56
  4. Step 4: Simplify right side
    19,641.47x = 549,315,508.40
  5. Step 5: Solve for x
    x = 549,315,508.40/19,641.47
  6. Step 6: Final answer
    x = 27,967.14

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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.