Home / 21,404.20-32,106.30-21,258.40

Finding the Fourth Proportional to 21,404.20, 32,106.30 and 21,258.40

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Solution

The fourth proportional to 21,404.20, 32,106.30 and 21,258.40 is: 31,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,404.20 : 32,106.30 = 21,258.40 : x
  2. Step 2: Convert to fraction form
    21,404.20/32,106.30 = 21,258.40/x
  3. Step 3: Cross multiply
    21,404.20x = 32,106.30 × 21,258.40
  4. Step 4: Simplify right side
    21,404.20x = 682,528,567.92
  5. Step 5: Solve for x
    x = 682,528,567.92/21,404.20
  6. Step 6: Final answer
    x = 31,887.60

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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.