Home / 13,580.77-18,742.01-7,612.40

Finding the Fourth Proportional to 13,580.77, 18,742.01 and 7,612.40

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Solution

The fourth proportional to 13,580.77, 18,742.01 and 7,612.40 is: 10,505.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,580.77 : 18,742.01 = 7,612.40 : x
  2. Step 2: Convert to fraction form
    13,580.77/18,742.01 = 7,612.40/x
  3. Step 3: Cross multiply
    13,580.77x = 18,742.01 × 7,612.40
  4. Step 4: Simplify right side
    13,580.77x = 142,671,676.92
  5. Step 5: Solve for x
    x = 142,671,676.92/13,580.77
  6. Step 6: Final answer
    x = 10,505.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.