Home / 12,225.16-18,337.74-4,431.40

Finding the Fourth Proportional to 12,225.16, 18,337.74 and 4,431.40

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Solution

The fourth proportional to 12,225.16, 18,337.74 and 4,431.40 is: 6,647.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,225.16 : 18,337.74 = 4,431.40 : x
  2. Step 2: Convert to fraction form
    12,225.16/18,337.74 = 4,431.40/x
  3. Step 3: Cross multiply
    12,225.16x = 18,337.74 × 4,431.40
  4. Step 4: Simplify right side
    12,225.16x = 81,261,861.04
  5. Step 5: Solve for x
    x = 81,261,861.04/12,225.16
  6. Step 6: Final answer
    x = 6,647.10

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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.