Home / 21,470.80-32,195.40-12,708.40

Finding the Fourth Proportional to 21,470.80, 32,195.40 and 12,708.40

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Solution

The fourth proportional to 21,470.80, 32,195.40 and 12,708.40 is: 19,056.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.80 : 32,195.40 = 12,708.40 : x
  2. Step 2: Convert to fraction form
    21,470.80/32,195.40 = 12,708.40/x
  3. Step 3: Cross multiply
    21,470.80x = 32,195.40 × 12,708.40
  4. Step 4: Simplify right side
    21,470.80x = 409,152,021.36
  5. Step 5: Solve for x
    x = 409,152,021.36/21,470.80
  6. Step 6: Final answer
    x = 19,056.21

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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.