Home / 21,532.02-29,705.74-15,880.33

Finding the Fourth Proportional to 21,532.02, 29,705.74 and 15,880.33

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Solution

The fourth proportional to 21,532.02, 29,705.74 and 15,880.33 is: 21,908.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,532.02 : 29,705.74 = 15,880.33 : x
  2. Step 2: Convert to fraction form
    21,532.02/29,705.74 = 15,880.33/x
  3. Step 3: Cross multiply
    21,532.02x = 29,705.74 × 15,880.33
  4. Step 4: Simplify right side
    21,532.02x = 471,736,954.09
  5. Step 5: Solve for x
    x = 471,736,954.09/21,532.02
  6. Step 6: Final answer
    x = 21,908.63

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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.