Home / 13,248.40-18,278.81-7,941.28

Finding the Fourth Proportional to 13,248.40, 18,278.81 and 7,941.28

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Solution

The fourth proportional to 13,248.40, 18,278.81 and 7,941.28 is: 10,956.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,248.40 : 18,278.81 = 7,941.28 : x
  2. Step 2: Convert to fraction form
    13,248.40/18,278.81 = 7,941.28/x
  3. Step 3: Cross multiply
    13,248.40x = 18,278.81 × 7,941.28
  4. Step 4: Simplify right side
    13,248.40x = 145,157,108.57
  5. Step 5: Solve for x
    x = 145,157,108.57/13,248.40
  6. Step 6: Final answer
    x = 10,956.58

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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.