Home / 21,043.24-31,572.45-13,028.68

Finding the Fourth Proportional to 21,043.24, 31,572.45 and 13,028.68

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Solution

The fourth proportional to 21,043.24, 31,572.45 and 13,028.68 is: 19,547.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043.24 : 31,572.45 = 13,028.68 : x
  2. Step 2: Convert to fraction form
    21,043.24/31,572.45 = 13,028.68/x
  3. Step 3: Cross multiply
    21,043.24x = 31,572.45 × 13,028.68
  4. Step 4: Simplify right side
    21,043.24x = 411,347,347.87
  5. Step 5: Solve for x
    x = 411,347,347.87/21,043.24
  6. Step 6: Final answer
    x = 19,547.72

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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.