Home / 30,691.04-42,355.86-18,756.64

Finding the Fourth Proportional to 30,691.04, 42,355.86 and 18,756.64

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Solution

The fourth proportional to 30,691.04, 42,355.86 and 18,756.64 is: 25,885.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,691.04 : 42,355.86 = 18,756.64 : x
  2. Step 2: Convert to fraction form
    30,691.04/42,355.86 = 18,756.64/x
  3. Step 3: Cross multiply
    30,691.04x = 42,355.86 × 18,756.64
  4. Step 4: Simplify right side
    30,691.04x = 794,453,617.91
  5. Step 5: Solve for x
    x = 794,453,617.91/30,691.04
  6. Step 6: Final answer
    x = 25,885.52

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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.