Home / 13,987.04-20,917.44-12,436.16

Finding the Fourth Proportional to 13,987.04, 20,917.44 and 12,436.16

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Solution

The fourth proportional to 13,987.04, 20,917.44 and 12,436.16 is: 18,598.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.04 : 20,917.44 = 12,436.16 : x
  2. Step 2: Convert to fraction form
    13,987.04/20,917.44 = 12,436.16/x
  3. Step 3: Cross multiply
    13,987.04x = 20,917.44 × 12,436.16
  4. Step 4: Simplify right side
    13,987.04x = 260,132,630.63
  5. Step 5: Solve for x
    x = 260,132,630.63/13,987.04
  6. Step 6: Final answer
    x = 18,598.12

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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.