Home / 39,575.81-54,615.85-21,672.51

Finding the Fourth Proportional to 39,575.81, 54,615.85 and 21,672.51

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Solution

The fourth proportional to 39,575.81, 54,615.85 and 21,672.51 is: 29,908.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,575.81 : 54,615.85 = 21,672.51 : x
  2. Step 2: Convert to fraction form
    39,575.81/54,615.85 = 21,672.51/x
  3. Step 3: Cross multiply
    39,575.81x = 54,615.85 × 21,672.51
  4. Step 4: Simplify right side
    39,575.81x = 1,183,662,555.28
  5. Step 5: Solve for x
    x = 1,183,662,555.28/39,575.81
  6. Step 6: Final answer
    x = 29,908.74

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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.