Home / 13,430.25-20,143.22-9,522.81

Finding the Fourth Proportional to 13,430.25, 20,143.22 and 9,522.81

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Solution

The fourth proportional to 13,430.25, 20,143.22 and 9,522.81 is: 14,282.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.25 : 20,143.22 = 9,522.81 : x
  2. Step 2: Convert to fraction form
    13,430.25/20,143.22 = 9,522.81/x
  3. Step 3: Cross multiply
    13,430.25x = 20,143.22 × 9,522.81
  4. Step 4: Simplify right side
    13,430.25x = 191,820,009.23
  5. Step 5: Solve for x
    x = 191,820,009.23/13,430.25
  6. Step 6: Final answer
    x = 14,282.68

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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.