Home / 22,939.68-31,666.40-19,421.12

Finding the Fourth Proportional to 22,939.68, 31,666.40 and 19,421.12

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Solution

The fourth proportional to 22,939.68, 31,666.40 and 19,421.12 is: 26,809.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,939.68 : 31,666.40 = 19,421.12 : x
  2. Step 2: Convert to fraction form
    22,939.68/31,666.40 = 19,421.12/x
  3. Step 3: Cross multiply
    22,939.68x = 31,666.40 × 19,421.12
  4. Step 4: Simplify right side
    22,939.68x = 614,996,954.37
  5. Step 5: Solve for x
    x = 614,996,954.37/22,939.68
  6. Step 6: Final answer
    x = 26,809.31

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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.