Home / 21,680.02-29,918.88-12,248.80

Finding the Fourth Proportional to 21,680.02, 29,918.88 and 12,248.80

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Solution

The fourth proportional to 21,680.02, 29,918.88 and 12,248.80 is: 16,903.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680.02 : 29,918.88 = 12,248.80 : x
  2. Step 2: Convert to fraction form
    21,680.02/29,918.88 = 12,248.80/x
  3. Step 3: Cross multiply
    21,680.02x = 29,918.88 × 12,248.80
  4. Step 4: Simplify right side
    21,680.02x = 366,470,377.34
  5. Step 5: Solve for x
    x = 366,470,377.34/21,680.02
  6. Step 6: Final answer
    x = 16,903.60

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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.