Home / 13,355.64-18,430.83-7,387.32

Finding the Fourth Proportional to 13,355.64, 18,430.83 and 7,387.32

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Solution

The fourth proportional to 13,355.64, 18,430.83 and 7,387.32 is: 10,194.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,355.64 : 18,430.83 = 7,387.32 : x
  2. Step 2: Convert to fraction form
    13,355.64/18,430.83 = 7,387.32/x
  3. Step 3: Cross multiply
    13,355.64x = 18,430.83 × 7,387.32
  4. Step 4: Simplify right side
    13,355.64x = 136,154,439.08
  5. Step 5: Solve for x
    x = 136,154,439.08/13,355.64
  6. Step 6: Final answer
    x = 10,194.53

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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.