Home / 21,419.90-32,129.74-14,289.06

Finding the Fourth Proportional to 21,419.90, 32,129.74 and 14,289.06

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Solution

The fourth proportional to 21,419.90, 32,129.74 and 14,289.06 is: 21,433.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,419.90 : 32,129.74 = 14,289.06 : x
  2. Step 2: Convert to fraction form
    21,419.90/32,129.74 = 14,289.06/x
  3. Step 3: Cross multiply
    21,419.90x = 32,129.74 × 14,289.06
  4. Step 4: Simplify right side
    21,419.90x = 459,103,782.64
  5. Step 5: Solve for x
    x = 459,103,782.64/21,419.90
  6. Step 6: Final answer
    x = 21,433.52

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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.