Home / 38,988.34-53,807.10-21,991.72

Finding the Fourth Proportional to 38,988.34, 53,807.10 and 21,991.72

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Solution

The fourth proportional to 38,988.34, 53,807.10 and 21,991.72 is: 30,350.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,988.34 : 53,807.10 = 21,991.72 : x
  2. Step 2: Convert to fraction form
    38,988.34/53,807.10 = 21,991.72/x
  3. Step 3: Cross multiply
    38,988.34x = 53,807.10 × 21,991.72
  4. Step 4: Simplify right side
    38,988.34x = 1,183,310,677.21
  5. Step 5: Solve for x
    x = 1,183,310,677.21/38,988.34
  6. Step 6: Final answer
    x = 30,350.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.