Home / 15,114.16-20,847.18-9,135.46

Finding the Fourth Proportional to 15,114.16, 20,847.18 and 9,135.46

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Solution

The fourth proportional to 15,114.16, 20,847.18 and 9,135.46 is: 12,600.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,114.16 : 20,847.18 = 9,135.46 : x
  2. Step 2: Convert to fraction form
    15,114.16/20,847.18 = 9,135.46/x
  3. Step 3: Cross multiply
    15,114.16x = 20,847.18 × 9,135.46
  4. Step 4: Simplify right side
    15,114.16x = 190,448,579.00
  5. Step 5: Solve for x
    x = 190,448,579.00/15,114.16
  6. Step 6: Final answer
    x = 12,600.67

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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.