Home / 15,849.80-21,877.02-9,137.60

Finding the Fourth Proportional to 15,849.80, 21,877.02 and 9,137.60

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Solution

The fourth proportional to 15,849.80, 21,877.02 and 9,137.60 is: 12,612.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,849.80 : 21,877.02 = 9,137.60 : x
  2. Step 2: Convert to fraction form
    15,849.80/21,877.02 = 9,137.60/x
  3. Step 3: Cross multiply
    15,849.80x = 21,877.02 × 9,137.60
  4. Step 4: Simplify right side
    15,849.80x = 199,903,457.95
  5. Step 5: Solve for x
    x = 199,903,457.95/15,849.80
  6. Step 6: Final answer
    x = 12,612.36

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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.