Home / 15,880.47-21,905.06-10,291.11

Finding the Fourth Proportional to 15,880.47, 21,905.06 and 10,291.11

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Solution

The fourth proportional to 15,880.47, 21,905.06 and 10,291.11 is: 14,195.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,880.47 : 21,905.06 = 10,291.11 : x
  2. Step 2: Convert to fraction form
    15,880.47/21,905.06 = 10,291.11/x
  3. Step 3: Cross multiply
    15,880.47x = 21,905.06 × 10,291.11
  4. Step 4: Simplify right side
    15,880.47x = 225,427,330.56
  5. Step 5: Solve for x
    x = 225,427,330.56/15,880.47
  6. Step 6: Final answer
    x = 14,195.26

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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.