Home / 21,336.90-32,005.35-18,744.90

Finding the Fourth Proportional to 21,336.90, 32,005.35 and 18,744.90

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Solution

The fourth proportional to 21,336.90, 32,005.35 and 18,744.90 is: 28,117.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.90 : 32,005.35 = 18,744.90 : x
  2. Step 2: Convert to fraction form
    21,336.90/32,005.35 = 18,744.90/x
  3. Step 3: Cross multiply
    21,336.90x = 32,005.35 × 18,744.90
  4. Step 4: Simplify right side
    21,336.90x = 599,937,085.22
  5. Step 5: Solve for x
    x = 599,937,085.22/21,336.90
  6. Step 6: Final answer
    x = 28,117.35

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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.