Home / 38,579.04-53,242.56-21,811.68

Finding the Fourth Proportional to 38,579.04, 53,242.56 and 21,811.68

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Solution

The fourth proportional to 38,579.04, 53,242.56 and 21,811.68 is: 30,102.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,579.04 : 53,242.56 = 21,811.68 : x
  2. Step 2: Convert to fraction form
    38,579.04/53,242.56 = 21,811.68/x
  3. Step 3: Cross multiply
    38,579.04x = 53,242.56 × 21,811.68
  4. Step 4: Simplify right side
    38,579.04x = 1,161,309,681.10
  5. Step 5: Solve for x
    x = 1,161,309,681.10/38,579.04
  6. Step 6: Final answer
    x = 30,102.09

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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.