Home / 30,752.85-42,440.77-18,818.52

Finding the Fourth Proportional to 30,752.85, 42,440.77 and 18,818.52

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Solution

The fourth proportional to 30,752.85, 42,440.77 and 18,818.52 is: 25,970.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,752.85 : 42,440.77 = 18,818.52 : x
  2. Step 2: Convert to fraction form
    30,752.85/42,440.77 = 18,818.52/x
  3. Step 3: Cross multiply
    30,752.85x = 42,440.77 × 18,818.52
  4. Step 4: Simplify right side
    30,752.85x = 798,672,479.06
  5. Step 5: Solve for x
    x = 798,672,479.06/30,752.85
  6. Step 6: Final answer
    x = 25,970.68

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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.