Home / 12,308.40-18,459.60-5,728.32

Finding the Fourth Proportional to 12,308.40, 18,459.60 and 5,728.32

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Solution

The fourth proportional to 12,308.40, 18,459.60 and 5,728.32 is: 8,591.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,308.40 : 18,459.60 = 5,728.32 : x
  2. Step 2: Convert to fraction form
    12,308.40/18,459.60 = 5,728.32/x
  3. Step 3: Cross multiply
    12,308.40x = 18,459.60 × 5,728.32
  4. Step 4: Simplify right side
    12,308.40x = 105,742,495.87
  5. Step 5: Solve for x
    x = 105,742,495.87/12,308.40
  6. Step 6: Final answer
    x = 8,591.08

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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.