Home / 21,076.81-31,626.15-15,281.26

Finding the Fourth Proportional to 21,076.81, 31,626.15 and 15,281.26

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Solution

The fourth proportional to 21,076.81, 31,626.15 and 15,281.26 is: 22,929.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.81 : 31,626.15 = 15,281.26 : x
  2. Step 2: Convert to fraction form
    21,076.81/31,626.15 = 15,281.26/x
  3. Step 3: Cross multiply
    21,076.81x = 31,626.15 × 15,281.26
  4. Step 4: Simplify right side
    21,076.81x = 483,287,284.58
  5. Step 5: Solve for x
    x = 483,287,284.58/21,076.81
  6. Step 6: Final answer
    x = 22,929.81

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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.