Home / 12,320.96-18,465.36-5,655.04

Finding the Fourth Proportional to 12,320.96, 18,465.36 and 5,655.04

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Solution

The fourth proportional to 12,320.96, 18,465.36 and 5,655.04 is: 8,475.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,320.96 : 18,465.36 = 5,655.04 : x
  2. Step 2: Convert to fraction form
    12,320.96/18,465.36 = 5,655.04/x
  3. Step 3: Cross multiply
    12,320.96x = 18,465.36 × 5,655.04
  4. Step 4: Simplify right side
    12,320.96x = 104,422,349.41
  5. Step 5: Solve for x
    x = 104,422,349.41/12,320.96
  6. Step 6: Final answer
    x = 8,475.18

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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.