Home / 12,335.40-18,503.10-10,384.20

Finding the Fourth Proportional to 12,335.40, 18,503.10 and 10,384.20

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Solution

The fourth proportional to 12,335.40, 18,503.10 and 10,384.20 is: 15,576.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,335.40 : 18,503.10 = 10,384.20 : x
  2. Step 2: Convert to fraction form
    12,335.40/18,503.10 = 10,384.20/x
  3. Step 3: Cross multiply
    12,335.40x = 18,503.10 × 10,384.20
  4. Step 4: Simplify right side
    12,335.40x = 192,139,891.02
  5. Step 5: Solve for x
    x = 192,139,891.02/12,335.40
  6. Step 6: Final answer
    x = 15,576.30

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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.