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Finding the Fourth Proportional to 35,988.72, 53,987.04 and 13,821.12

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Solution

The fourth proportional to 35,988.72, 53,987.04 and 13,821.12 is: 20,733.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,988.72 : 53,987.04 = 13,821.12 : x
  2. Step 2: Convert to fraction form
    35,988.72/53,987.04 = 13,821.12/x
  3. Step 3: Cross multiply
    35,988.72x = 53,987.04 × 13,821.12
  4. Step 4: Simplify right side
    35,988.72x = 746,161,358.28
  5. Step 5: Solve for x
    x = 746,161,358.28/35,988.72
  6. Step 6: Final answer
    x = 20,733.20

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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.