Home / 22,334.90-30,822.80-12,643.60

Finding the Fourth Proportional to 22,334.90, 30,822.80 and 12,643.60

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Solution

The fourth proportional to 22,334.90, 30,822.80 and 12,643.60 is: 17,448.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,334.90 : 30,822.80 = 12,643.60 : x
  2. Step 2: Convert to fraction form
    22,334.90/30,822.80 = 12,643.60/x
  3. Step 3: Cross multiply
    22,334.90x = 30,822.80 × 12,643.60
  4. Step 4: Simplify right side
    22,334.90x = 389,711,013.81
  5. Step 5: Solve for x
    x = 389,711,013.81/22,334.90
  6. Step 6: Final answer
    x = 17,448.53

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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.