Home / 21,619.47-32,423.40-8,289.57

Finding the Fourth Proportional to 21,619.47, 32,423.40 and 8,289.57

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Solution

The fourth proportional to 21,619.47, 32,423.40 and 8,289.57 is: 12,432.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,619.47 : 32,423.40 = 8,289.57 : x
  2. Step 2: Convert to fraction form
    21,619.47/32,423.40 = 8,289.57/x
  3. Step 3: Cross multiply
    21,619.47x = 32,423.40 × 8,289.57
  4. Step 4: Simplify right side
    21,619.47x = 268,776,043.94
  5. Step 5: Solve for x
    x = 268,776,043.94/21,619.47
  6. Step 6: Final answer
    x = 12,432.13

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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.