Home / 19,965.48-29,837.76-18,813.12

Finding the Fourth Proportional to 19,965.48, 29,837.76 and 18,813.12

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Solution

The fourth proportional to 19,965.48, 29,837.76 and 18,813.12 is: 28,115.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,965.48 : 29,837.76 = 18,813.12 : x
  2. Step 2: Convert to fraction form
    19,965.48/29,837.76 = 18,813.12/x
  3. Step 3: Cross multiply
    19,965.48x = 29,837.76 × 18,813.12
  4. Step 4: Simplify right side
    19,965.48x = 561,341,359.41
  5. Step 5: Solve for x
    x = 561,341,359.41/19,965.48
  6. Step 6: Final answer
    x = 28,115.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.