Home / 39,580.17-54,619.97-21,430.75

Finding the Fourth Proportional to 39,580.17, 54,619.97 and 21,430.75

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Solution

The fourth proportional to 39,580.17, 54,619.97 and 21,430.75 is: 29,574.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,580.17 : 54,619.97 = 21,430.75 : x
  2. Step 2: Convert to fraction form
    39,580.17/54,619.97 = 21,430.75/x
  3. Step 3: Cross multiply
    39,580.17x = 54,619.97 × 21,430.75
  4. Step 4: Simplify right side
    39,580.17x = 1,170,546,678.37
  5. Step 5: Solve for x
    x = 1,170,546,678.37/39,580.17
  6. Step 6: Final answer
    x = 29,574.07

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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.