Home / 12,318.48-18,477.72-10,465.20

Finding the Fourth Proportional to 12,318.48, 18,477.72 and 10,465.20

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Solution

The fourth proportional to 12,318.48, 18,477.72 and 10,465.20 is: 15,697.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.48 : 18,477.72 = 10,465.20 : x
  2. Step 2: Convert to fraction form
    12,318.48/18,477.72 = 10,465.20/x
  3. Step 3: Cross multiply
    12,318.48x = 18,477.72 × 10,465.20
  4. Step 4: Simplify right side
    12,318.48x = 193,373,035.34
  5. Step 5: Solve for x
    x = 193,373,035.34/12,318.48
  6. Step 6: Final answer
    x = 15,697.80

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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.