Home / 30,211.98-45,333.51-12,455.76

Finding the Fourth Proportional to 30,211.98, 45,333.51 and 12,455.76

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Solution

The fourth proportional to 30,211.98, 45,333.51 and 12,455.76 is: 18,690.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,211.98 : 45,333.51 = 12,455.76 : x
  2. Step 2: Convert to fraction form
    30,211.98/45,333.51 = 12,455.76/x
  3. Step 3: Cross multiply
    30,211.98x = 45,333.51 × 12,455.76
  4. Step 4: Simplify right side
    30,211.98x = 564,663,320.52
  5. Step 5: Solve for x
    x = 564,663,320.52/30,211.98
  6. Step 6: Final answer
    x = 18,690.05

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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.