Home / 39,038.28-53,872.71-21,133.62

Finding the Fourth Proportional to 39,038.28, 53,872.71 and 21,133.62

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Solution

The fourth proportional to 39,038.28, 53,872.71 and 21,133.62 is: 29,164.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,038.28 : 53,872.71 = 21,133.62 : x
  2. Step 2: Convert to fraction form
    39,038.28/53,872.71 = 21,133.62/x
  3. Step 3: Cross multiply
    39,038.28x = 53,872.71 × 21,133.62
  4. Step 4: Simplify right side
    39,038.28x = 1,138,525,381.51
  5. Step 5: Solve for x
    x = 1,138,525,381.51/39,038.28
  6. Step 6: Final answer
    x = 29,164.33

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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.