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Finding the Fourth Proportional to 35,574.76, 53,345.70 and 20,788.21

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Solution

The fourth proportional to 35,574.76, 53,345.70 and 20,788.21 is: 31,172.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,574.76 : 53,345.70 = 20,788.21 : x
  2. Step 2: Convert to fraction form
    35,574.76/53,345.70 = 20,788.21/x
  3. Step 3: Cross multiply
    35,574.76x = 53,345.70 × 20,788.21
  4. Step 4: Simplify right side
    35,574.76x = 1,108,961,614.20
  5. Step 5: Solve for x
    x = 1,108,961,614.20/35,574.76
  6. Step 6: Final answer
    x = 31,172.71

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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.