Home / 39,035.65-53,869.21-21,130.60

Finding the Fourth Proportional to 39,035.65, 53,869.21 and 21,130.60

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Solution

The fourth proportional to 39,035.65, 53,869.21 and 21,130.60 is: 29,160.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,035.65 : 53,869.21 = 21,130.60 : x
  2. Step 2: Convert to fraction form
    39,035.65/53,869.21 = 21,130.60/x
  3. Step 3: Cross multiply
    39,035.65x = 53,869.21 × 21,130.60
  4. Step 4: Simplify right side
    39,035.65x = 1,138,288,728.83
  5. Step 5: Solve for x
    x = 1,138,288,728.83/39,035.65
  6. Step 6: Final answer
    x = 29,160.24

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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.