Home / 13,242.78-18,273.06-7,274.70

Finding the Fourth Proportional to 13,242.78, 18,273.06 and 7,274.70

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Solution

The fourth proportional to 13,242.78, 18,273.06 and 7,274.70 is: 10,038.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,242.78 : 18,273.06 = 7,274.70 : x
  2. Step 2: Convert to fraction form
    13,242.78/18,273.06 = 7,274.70/x
  3. Step 3: Cross multiply
    13,242.78x = 18,273.06 × 7,274.70
  4. Step 4: Simplify right side
    13,242.78x = 132,931,029.58
  5. Step 5: Solve for x
    x = 132,931,029.58/13,242.78
  6. Step 6: Final answer
    x = 10,038.00

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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.