Home / 14,047.40-21,095.40-9,138.80

Finding the Fourth Proportional to 14,047.40, 21,095.40 and 9,138.80

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Solution

The fourth proportional to 14,047.40, 21,095.40 and 9,138.80 is: 13,724.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,047.40 : 21,095.40 = 9,138.80 : x
  2. Step 2: Convert to fraction form
    14,047.40/21,095.40 = 9,138.80/x
  3. Step 3: Cross multiply
    14,047.40x = 21,095.40 × 9,138.80
  4. Step 4: Simplify right side
    14,047.40x = 192,786,641.52
  5. Step 5: Solve for x
    x = 192,786,641.52/14,047.40
  6. Step 6: Final answer
    x = 13,724.01

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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.