Home / 21,916.22-30,246.50-12,966.60

Finding the Fourth Proportional to 21,916.22, 30,246.50 and 12,966.60

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Solution

The fourth proportional to 21,916.22, 30,246.50 and 12,966.60 is: 17,895.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,916.22 : 30,246.50 = 12,966.60 : x
  2. Step 2: Convert to fraction form
    21,916.22/30,246.50 = 12,966.60/x
  3. Step 3: Cross multiply
    21,916.22x = 30,246.50 × 12,966.60
  4. Step 4: Simplify right side
    21,916.22x = 392,194,266.90
  5. Step 5: Solve for x
    x = 392,194,266.90/21,916.22
  6. Step 6: Final answer
    x = 17,895.16

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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.