Home / 21,335.34-31,941.05-12,423.50

Finding the Fourth Proportional to 21,335.34, 31,941.05 and 12,423.50

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Solution

The fourth proportional to 21,335.34, 31,941.05 and 12,423.50 is: 18,599.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.34 : 31,941.05 = 12,423.50 : x
  2. Step 2: Convert to fraction form
    21,335.34/31,941.05 = 12,423.50/x
  3. Step 3: Cross multiply
    21,335.34x = 31,941.05 × 12,423.50
  4. Step 4: Simplify right side
    21,335.34x = 396,819,412.85
  5. Step 5: Solve for x
    x = 396,819,412.85/21,335.34
  6. Step 6: Final answer
    x = 18,599.16

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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.