Home / 21,266.88-31,903.56-10,875.12

Finding the Fourth Proportional to 21,266.88, 31,903.56 and 10,875.12

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Solution

The fourth proportional to 21,266.88, 31,903.56 and 10,875.12 is: 16,314.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,266.88 : 31,903.56 = 10,875.12 : x
  2. Step 2: Convert to fraction form
    21,266.88/31,903.56 = 10,875.12/x
  3. Step 3: Cross multiply
    21,266.88x = 31,903.56 × 10,875.12
  4. Step 4: Simplify right side
    21,266.88x = 346,955,043.43
  5. Step 5: Solve for x
    x = 346,955,043.43/21,266.88
  6. Step 6: Final answer
    x = 16,314.34

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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.