Home / 39,071.12-53,918.40-21,166.11

Finding the Fourth Proportional to 39,071.12, 53,918.40 and 21,166.11

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Solution

The fourth proportional to 39,071.12, 53,918.40 and 21,166.11 is: 29,209.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,071.12 : 53,918.40 = 21,166.11 : x
  2. Step 2: Convert to fraction form
    39,071.12/53,918.40 = 21,166.11/x
  3. Step 3: Cross multiply
    39,071.12x = 53,918.40 × 21,166.11
  4. Step 4: Simplify right side
    39,071.12x = 1,141,242,785.42
  5. Step 5: Solve for x
    x = 1,141,242,785.42/39,071.12
  6. Step 6: Final answer
    x = 29,209.37

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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.