Home / 12,206.90-18,312.51-4,814.30

Finding the Fourth Proportional to 12,206.90, 18,312.51 and 4,814.30

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Solution

The fourth proportional to 12,206.90, 18,312.51 and 4,814.30 is: 7,222.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,206.90 : 18,312.51 = 4,814.30 : x
  2. Step 2: Convert to fraction form
    12,206.90/18,312.51 = 4,814.30/x
  3. Step 3: Cross multiply
    12,206.90x = 18,312.51 × 4,814.30
  4. Step 4: Simplify right side
    12,206.90x = 88,161,916.89
  5. Step 5: Solve for x
    x = 88,161,916.89/12,206.90
  6. Step 6: Final answer
    x = 7,222.30

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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.