Home / 30,818.93-42,531.32-18,070.34

Finding the Fourth Proportional to 30,818.93, 42,531.32 and 18,070.34

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Solution

The fourth proportional to 30,818.93, 42,531.32 and 18,070.34 is: 24,937.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,818.93 : 42,531.32 = 18,070.34 : x
  2. Step 2: Convert to fraction form
    30,818.93/42,531.32 = 18,070.34/x
  3. Step 3: Cross multiply
    30,818.93x = 42,531.32 × 18,070.34
  4. Step 4: Simplify right side
    30,818.93x = 768,555,245.57
  5. Step 5: Solve for x
    x = 768,555,245.57/30,818.93
  6. Step 6: Final answer
    x = 24,937.77

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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.