Home / 14,124.40-21,186.60-12,763.60

Finding the Fourth Proportional to 14,124.40, 21,186.60 and 12,763.60

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Solution

The fourth proportional to 14,124.40, 21,186.60 and 12,763.60 is: 19,145.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,124.40 : 21,186.60 = 12,763.60 : x
  2. Step 2: Convert to fraction form
    14,124.40/21,186.60 = 12,763.60/x
  3. Step 3: Cross multiply
    14,124.40x = 21,186.60 × 12,763.60
  4. Step 4: Simplify right side
    14,124.40x = 270,417,287.76
  5. Step 5: Solve for x
    x = 270,417,287.76/14,124.40
  6. Step 6: Final answer
    x = 19,145.40

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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.