Home / 30,931.20-46,408.32-12,458.88

Finding the Fourth Proportional to 30,931.20, 46,408.32 and 12,458.88

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Solution

The fourth proportional to 30,931.20, 46,408.32 and 12,458.88 is: 18,692.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,931.20 : 46,408.32 = 12,458.88 : x
  2. Step 2: Convert to fraction form
    30,931.20/46,408.32 = 12,458.88/x
  3. Step 3: Cross multiply
    30,931.20x = 46,408.32 × 12,458.88
  4. Step 4: Simplify right side
    30,931.20x = 578,195,689.88
  5. Step 5: Solve for x
    x = 578,195,689.88/30,931.20
  6. Step 6: Final answer
    x = 18,692.96

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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.