Home / 30,885.50-42,626.57-19,556.05

Finding the Fourth Proportional to 30,885.50, 42,626.57 and 19,556.05

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Solution

The fourth proportional to 30,885.50, 42,626.57 and 19,556.05 is: 26,990.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,885.50 : 42,626.57 = 19,556.05 : x
  2. Step 2: Convert to fraction form
    30,885.50/42,626.57 = 19,556.05/x
  3. Step 3: Cross multiply
    30,885.50x = 42,626.57 × 19,556.05
  4. Step 4: Simplify right side
    30,885.50x = 833,607,236.47
  5. Step 5: Solve for x
    x = 833,607,236.47/30,885.50
  6. Step 6: Final answer
    x = 26,990.25

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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.