Home / 21,059.09-31,579.43-7,902.23

Finding the Fourth Proportional to 21,059.09, 31,579.43 and 7,902.23

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Solution

The fourth proportional to 21,059.09, 31,579.43 and 7,902.23 is: 11,849.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,059.09 : 31,579.43 = 7,902.23 : x
  2. Step 2: Convert to fraction form
    21,059.09/31,579.43 = 7,902.23/x
  3. Step 3: Cross multiply
    21,059.09x = 31,579.43 × 7,902.23
  4. Step 4: Simplify right side
    21,059.09x = 249,547,879.62
  5. Step 5: Solve for x
    x = 249,547,879.62/21,059.09
  6. Step 6: Final answer
    x = 11,849.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.