Home / 14,100.60-21,142.80-4,238.40

Finding the Fourth Proportional to 14,100.60, 21,142.80 and 4,238.40

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Solution

The fourth proportional to 14,100.60, 21,142.80 and 4,238.40 is: 6,355.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,100.60 : 21,142.80 = 4,238.40 : x
  2. Step 2: Convert to fraction form
    14,100.60/21,142.80 = 4,238.40/x
  3. Step 3: Cross multiply
    14,100.60x = 21,142.80 × 4,238.40
  4. Step 4: Simplify right side
    14,100.60x = 89,611,643.52
  5. Step 5: Solve for x
    x = 89,611,643.52/14,100.60
  6. Step 6: Final answer
    x = 6,355.17

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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.