Home / 19,113.34-28,655.13-9,112.90

Finding the Fourth Proportional to 19,113.34, 28,655.13 and 9,112.90

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Solution

The fourth proportional to 19,113.34, 28,655.13 and 9,112.90 is: 13,662.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,113.34 : 28,655.13 = 9,112.90 : x
  2. Step 2: Convert to fraction form
    19,113.34/28,655.13 = 9,112.90/x
  3. Step 3: Cross multiply
    19,113.34x = 28,655.13 × 9,112.90
  4. Step 4: Simplify right side
    19,113.34x = 261,131,334.18
  5. Step 5: Solve for x
    x = 261,131,334.18/19,113.34
  6. Step 6: Final answer
    x = 13,662.26

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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.