Home / 26,118.40-39,203.20-12,985.60

Finding the Fourth Proportional to 26,118.40, 39,203.20 and 12,985.60

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Solution

The fourth proportional to 26,118.40, 39,203.20 and 12,985.60 is: 19,491.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,118.40 : 39,203.20 = 12,985.60 : x
  2. Step 2: Convert to fraction form
    26,118.40/39,203.20 = 12,985.60/x
  3. Step 3: Cross multiply
    26,118.40x = 39,203.20 × 12,985.60
  4. Step 4: Simplify right side
    26,118.40x = 509,077,073.92
  5. Step 5: Solve for x
    x = 509,077,073.92/26,118.40
  6. Step 6: Final answer
    x = 19,491.13

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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.