Home / 39,035.79-53,869.37-21,130.94

Finding the Fourth Proportional to 39,035.79, 53,869.37 and 21,130.94

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Solution

The fourth proportional to 39,035.79, 53,869.37 and 21,130.94 is: 29,160.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,035.79 : 53,869.37 = 21,130.94 : x
  2. Step 2: Convert to fraction form
    39,035.79/53,869.37 = 21,130.94/x
  3. Step 3: Cross multiply
    39,035.79x = 53,869.37 × 21,130.94
  4. Step 4: Simplify right side
    39,035.79x = 1,138,310,050.31
  5. Step 5: Solve for x
    x = 1,138,310,050.31/39,035.79
  6. Step 6: Final answer
    x = 29,160.68

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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.