Home / 39,386.99-54,354.11-21,482.08

Finding the Fourth Proportional to 39,386.99, 54,354.11 and 21,482.08

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Solution

The fourth proportional to 39,386.99, 54,354.11 and 21,482.08 is: 29,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,386.99 : 54,354.11 = 21,482.08 : x
  2. Step 2: Convert to fraction form
    39,386.99/54,354.11 = 21,482.08/x
  3. Step 3: Cross multiply
    39,386.99x = 54,354.11 × 21,482.08
  4. Step 4: Simplify right side
    39,386.99x = 1,167,639,096.05
  5. Step 5: Solve for x
    x = 1,167,639,096.05/39,386.99
  6. Step 6: Final answer
    x = 29,645.30

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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.