Home / 15,860.95-21,883.13-9,145.67

Finding the Fourth Proportional to 15,860.95, 21,883.13 and 9,145.67

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Solution

The fourth proportional to 15,860.95, 21,883.13 and 9,145.67 is: 12,618.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,860.95 : 21,883.13 = 9,145.67 : x
  2. Step 2: Convert to fraction form
    15,860.95/21,883.13 = 9,145.67/x
  3. Step 3: Cross multiply
    15,860.95x = 21,883.13 × 9,145.67
  4. Step 4: Simplify right side
    15,860.95x = 200,135,730.40
  5. Step 5: Solve for x
    x = 200,135,730.40/15,860.95
  6. Step 6: Final answer
    x = 12,618.14

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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.