Home / 39,130.16-53,998.68-21,224.72

Finding the Fourth Proportional to 39,130.16, 53,998.68 and 21,224.72

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Solution

The fourth proportional to 39,130.16, 53,998.68 and 21,224.72 is: 29,289.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,130.16 : 53,998.68 = 21,224.72 : x
  2. Step 2: Convert to fraction form
    39,130.16/53,998.68 = 21,224.72/x
  3. Step 3: Cross multiply
    39,130.16x = 53,998.68 × 21,224.72
  4. Step 4: Simplify right side
    39,130.16x = 1,146,106,863.37
  5. Step 5: Solve for x
    x = 1,146,106,863.37/39,130.16
  6. Step 6: Final answer
    x = 29,289.60

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Double scale
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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.