Home / 39,398.85-59,099.13-21,979.53

Finding the Fourth Proportional to 39,398.85, 59,099.13 and 21,979.53

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Solution

The fourth proportional to 39,398.85, 59,099.13 and 21,979.53 is: 32,969.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,398.85 : 59,099.13 = 21,979.53 : x
  2. Step 2: Convert to fraction form
    39,398.85/59,099.13 = 21,979.53/x
  3. Step 3: Cross multiply
    39,398.85x = 59,099.13 × 21,979.53
  4. Step 4: Simplify right side
    39,398.85x = 1,298,971,100.81
  5. Step 5: Solve for x
    x = 1,298,971,100.81/39,398.85
  6. Step 6: Final answer
    x = 32,969.77

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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.