Home / 12,558.40-18,837.60-5,160.40

Finding the Fourth Proportional to 12,558.40, 18,837.60 and 5,160.40

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Solution

The fourth proportional to 12,558.40, 18,837.60 and 5,160.40 is: 7,740.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.40 : 18,837.60 = 5,160.40 : x
  2. Step 2: Convert to fraction form
    12,558.40/18,837.60 = 5,160.40/x
  3. Step 3: Cross multiply
    12,558.40x = 18,837.60 × 5,160.40
  4. Step 4: Simplify right side
    12,558.40x = 97,209,551.04
  5. Step 5: Solve for x
    x = 97,209,551.04/12,558.40
  6. Step 6: Final answer
    x = 7,740.60

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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.