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Finding the Fourth Proportional to 36,681.53, 55,038.08 and 19,811.15

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Solution

The fourth proportional to 36,681.53, 55,038.08 and 19,811.15 is: 29,725.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,681.53 : 55,038.08 = 19,811.15 : x
  2. Step 2: Convert to fraction form
    36,681.53/55,038.08 = 19,811.15/x
  3. Step 3: Cross multiply
    36,681.53x = 55,038.08 × 19,811.15
  4. Step 4: Simplify right side
    36,681.53x = 1,090,367,383.40
  5. Step 5: Solve for x
    x = 1,090,367,383.40/36,681.53
  6. Step 6: Final answer
    x = 29,725.25

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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.