Home / 12,331.20-18,496.80-10,970.40

Finding the Fourth Proportional to 12,331.20, 18,496.80 and 10,970.40

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Solution

The fourth proportional to 12,331.20, 18,496.80 and 10,970.40 is: 16,455.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,331.20 : 18,496.80 = 10,970.40 : x
  2. Step 2: Convert to fraction form
    12,331.20/18,496.80 = 10,970.40/x
  3. Step 3: Cross multiply
    12,331.20x = 18,496.80 × 10,970.40
  4. Step 4: Simplify right side
    12,331.20x = 202,917,294.72
  5. Step 5: Solve for x
    x = 202,917,294.72/12,331.20
  6. Step 6: Final answer
    x = 16,455.60

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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.