Home / 30,319.17-45,484.85-12,788.92

Finding the Fourth Proportional to 30,319.17, 45,484.85 and 12,788.92

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Solution

The fourth proportional to 30,319.17, 45,484.85 and 12,788.92 is: 19,185.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,319.17 : 45,484.85 = 12,788.92 : x
  2. Step 2: Convert to fraction form
    30,319.17/45,484.85 = 12,788.92/x
  3. Step 3: Cross multiply
    30,319.17x = 45,484.85 × 12,788.92
  4. Step 4: Simplify right side
    30,319.17x = 581,702,107.86
  5. Step 5: Solve for x
    x = 581,702,107.86/30,319.17
  6. Step 6: Final answer
    x = 19,185.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.