Home / 39,435.53-54,421.29-21,530.66

Finding the Fourth Proportional to 39,435.53, 54,421.29 and 21,530.66

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Solution

The fourth proportional to 39,435.53, 54,421.29 and 21,530.66 is: 29,712.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,435.53 : 54,421.29 = 21,530.66 : x
  2. Step 2: Convert to fraction form
    39,435.53/54,421.29 = 21,530.66/x
  3. Step 3: Cross multiply
    39,435.53x = 54,421.29 × 21,530.66
  4. Step 4: Simplify right side
    39,435.53x = 1,171,726,019.64
  5. Step 5: Solve for x
    x = 1,171,726,019.64/39,435.53
  6. Step 6: Final answer
    x = 29,712.45

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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.