Home / 19,886.99-27,433.67-12,330.90

Finding the Fourth Proportional to 19,886.99, 27,433.67 and 12,330.90

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Solution

The fourth proportional to 19,886.99, 27,433.67 and 12,330.90 is: 17,010.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,886.99 : 27,433.67 = 12,330.90 : x
  2. Step 2: Convert to fraction form
    19,886.99/27,433.67 = 12,330.90/x
  3. Step 3: Cross multiply
    19,886.99x = 27,433.67 × 12,330.90
  4. Step 4: Simplify right side
    19,886.99x = 338,281,779.75
  5. Step 5: Solve for x
    x = 338,281,779.75/19,886.99
  6. Step 6: Final answer
    x = 17,010.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.