Home / 38,637.81-53,321.49-21,641.85

Finding the Fourth Proportional to 38,637.81, 53,321.49 and 21,641.85

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Solution

The fourth proportional to 38,637.81, 53,321.49 and 21,641.85 is: 29,866.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,637.81 : 53,321.49 = 21,641.85 : x
  2. Step 2: Convert to fraction form
    38,637.81/53,321.49 = 21,641.85/x
  3. Step 3: Cross multiply
    38,637.81x = 53,321.49 × 21,641.85
  4. Step 4: Simplify right side
    38,637.81x = 1,153,975,688.36
  5. Step 5: Solve for x
    x = 1,153,975,688.36/38,637.81
  6. Step 6: Final answer
    x = 29,866.49

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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.