Home / 30,700.86-42,364.65-17,269.44

Finding the Fourth Proportional to 30,700.86, 42,364.65 and 17,269.44

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Solution

The fourth proportional to 30,700.86, 42,364.65 and 17,269.44 is: 23,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,700.86 : 42,364.65 = 17,269.44 : x
  2. Step 2: Convert to fraction form
    30,700.86/42,364.65 = 17,269.44/x
  3. Step 3: Cross multiply
    30,700.86x = 42,364.65 × 17,269.44
  4. Step 4: Simplify right side
    30,700.86x = 731,613,781.30
  5. Step 5: Solve for x
    x = 731,613,781.30/30,700.86
  6. Step 6: Final answer
    x = 23,830.40

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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.