Home / 19,354.23-29,010.78-12,312.09

Finding the Fourth Proportional to 19,354.23, 29,010.78 and 12,312.09

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Solution

The fourth proportional to 19,354.23, 29,010.78 and 12,312.09 is: 18,455.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,354.23 : 29,010.78 = 12,312.09 : x
  2. Step 2: Convert to fraction form
    19,354.23/29,010.78 = 12,312.09/x
  3. Step 3: Cross multiply
    19,354.23x = 29,010.78 × 12,312.09
  4. Step 4: Simplify right side
    19,354.23x = 357,183,334.33
  5. Step 5: Solve for x
    x = 357,183,334.33/19,354.23
  6. Step 6: Final answer
    x = 18,455.05

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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.