Home / 30,528.85-42,128.56-17,099.89

Finding the Fourth Proportional to 30,528.85, 42,128.56 and 17,099.89

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Solution

The fourth proportional to 30,528.85, 42,128.56 and 17,099.89 is: 23,597.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,528.85 : 42,128.56 = 17,099.89 : x
  2. Step 2: Convert to fraction form
    30,528.85/42,128.56 = 17,099.89/x
  3. Step 3: Cross multiply
    30,528.85x = 42,128.56 × 17,099.89
  4. Step 4: Simplify right side
    30,528.85x = 720,393,741.86
  5. Step 5: Solve for x
    x = 720,393,741.86/30,528.85
  6. Step 6: Final answer
    x = 23,597.15

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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.