Home / 13,242.48-18,273.72-7,274.40

Finding the Fourth Proportional to 13,242.48, 18,273.72 and 7,274.40

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Solution

The fourth proportional to 13,242.48, 18,273.72 and 7,274.40 is: 10,038.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.48 : 18,273.72 = 7,274.40 : x
  2. Step 2: Convert to fraction form
    13,242.48/18,273.72 = 7,274.40/x
  3. Step 3: Cross multiply
    13,242.48x = 18,273.72 × 7,274.40
  4. Step 4: Simplify right side
    13,242.48x = 132,930,266.60
  5. Step 5: Solve for x
    x = 132,930,266.60/13,242.48
  6. Step 6: Final answer
    x = 10,038.17

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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.