Home / 21,169.81-31,856.37-17,448.40

Finding the Fourth Proportional to 21,169.81, 31,856.37 and 17,448.40

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Solution

The fourth proportional to 21,169.81, 31,856.37 and 17,448.40 is: 26,256.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.81 : 31,856.37 = 17,448.40 : x
  2. Step 2: Convert to fraction form
    21,169.81/31,856.37 = 17,448.40/x
  3. Step 3: Cross multiply
    21,169.81x = 31,856.37 × 17,448.40
  4. Step 4: Simplify right side
    21,169.81x = 555,842,686.31
  5. Step 5: Solve for x
    x = 555,842,686.31/21,169.81
  6. Step 6: Final answer
    x = 26,256.39

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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.