Home / 21,393.20-32,089.80-14,020.40

Finding the Fourth Proportional to 21,393.20, 32,089.80 and 14,020.40

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Solution

The fourth proportional to 21,393.20, 32,089.80 and 14,020.40 is: 21,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,393.20 : 32,089.80 = 14,020.40 : x
  2. Step 2: Convert to fraction form
    21,393.20/32,089.80 = 14,020.40/x
  3. Step 3: Cross multiply
    21,393.20x = 32,089.80 × 14,020.40
  4. Step 4: Simplify right side
    21,393.20x = 449,911,831.92
  5. Step 5: Solve for x
    x = 449,911,831.92/21,393.20
  6. Step 6: Final answer
    x = 21,030.60

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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.