Home / 15,903.75-21,948.20-9,189.66

Finding the Fourth Proportional to 15,903.75, 21,948.20 and 9,189.66

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Solution

The fourth proportional to 15,903.75, 21,948.20 and 9,189.66 is: 12,682.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,903.75 : 21,948.20 = 9,189.66 : x
  2. Step 2: Convert to fraction form
    15,903.75/21,948.20 = 9,189.66/x
  3. Step 3: Cross multiply
    15,903.75x = 21,948.20 × 9,189.66
  4. Step 4: Simplify right side
    15,903.75x = 201,696,495.61
  5. Step 5: Solve for x
    x = 201,696,495.61/15,903.75
  6. Step 6: Final answer
    x = 12,682.32

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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.