Home / 12,655.18-18,964.30-8,955.40

Finding the Fourth Proportional to 12,655.18, 18,964.30 and 8,955.40

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Solution

The fourth proportional to 12,655.18, 18,964.30 and 8,955.40 is: 13,420.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.18 : 18,964.30 = 8,955.40 : x
  2. Step 2: Convert to fraction form
    12,655.18/18,964.30 = 8,955.40/x
  3. Step 3: Cross multiply
    12,655.18x = 18,964.30 × 8,955.40
  4. Step 4: Simplify right side
    12,655.18x = 169,832,892.22
  5. Step 5: Solve for x
    x = 169,832,892.22/12,655.18
  6. Step 6: Final answer
    x = 13,420.03

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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.