Home / 19,157.40-28,736.10-9,315.90

Finding the Fourth Proportional to 19,157.40, 28,736.10 and 9,315.90

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Solution

The fourth proportional to 19,157.40, 28,736.10 and 9,315.90 is: 13,973.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,157.40 : 28,736.10 = 9,315.90 : x
  2. Step 2: Convert to fraction form
    19,157.40/28,736.10 = 9,315.90/x
  3. Step 3: Cross multiply
    19,157.40x = 28,736.10 × 9,315.90
  4. Step 4: Simplify right side
    19,157.40x = 267,702,633.99
  5. Step 5: Solve for x
    x = 267,702,633.99/19,157.40
  6. Step 6: Final answer
    x = 13,973.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.