Home / 13,224.81-18,248.31-7,918.50

Finding the Fourth Proportional to 13,224.81, 18,248.31 and 7,918.50

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Solution

The fourth proportional to 13,224.81, 18,248.31 and 7,918.50 is: 10,926.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,224.81 : 18,248.31 = 7,918.50 : x
  2. Step 2: Convert to fraction form
    13,224.81/18,248.31 = 7,918.50/x
  3. Step 3: Cross multiply
    13,224.81x = 18,248.31 × 7,918.50
  4. Step 4: Simplify right side
    13,224.81x = 144,499,242.74
  5. Step 5: Solve for x
    x = 144,499,242.74/13,224.81
  6. Step 6: Final answer
    x = 10,926.38

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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.