Home / 13,210.96-18,231.11-7,242.50

Finding the Fourth Proportional to 13,210.96, 18,231.11 and 7,242.50

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Solution

The fourth proportional to 13,210.96, 18,231.11 and 7,242.50 is: 9,994.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.96 : 18,231.11 = 7,242.50 : x
  2. Step 2: Convert to fraction form
    13,210.96/18,231.11 = 7,242.50/x
  3. Step 3: Cross multiply
    13,210.96x = 18,231.11 × 7,242.50
  4. Step 4: Simplify right side
    13,210.96x = 132,038,741.13
  5. Step 5: Solve for x
    x = 132,038,741.13/13,210.96
  6. Step 6: Final answer
    x = 9,994.64

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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.