Home / 19,149.12-26,430-12,085.12

Finding the Fourth Proportional to 19,149.12, 26,430 and 12,085.12

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Solution

The fourth proportional to 19,149.12, 26,430 and 12,085.12 is: 16,680.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,149.12 : 26,430 = 12,085.12 : x
  2. Step 2: Convert to fraction form
    19,149.12/26,430 = 12,085.12/x
  3. Step 3: Cross multiply
    19,149.12x = 26,430 × 12,085.12
  4. Step 4: Simplify right side
    19,149.12x = 319,409,721.60
  5. Step 5: Solve for x
    x = 319,409,721.60/19,149.12
  6. Step 6: Final answer
    x = 16,680.13

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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.