Home / 27,931.44-38,544.84-15,356.40

Finding the Fourth Proportional to 27,931.44, 38,544.84 and 15,356.40

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Solution

The fourth proportional to 27,931.44, 38,544.84 and 15,356.40 is: 21,191.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,931.44 : 38,544.84 = 15,356.40 : x
  2. Step 2: Convert to fraction form
    27,931.44/38,544.84 = 15,356.40/x
  3. Step 3: Cross multiply
    27,931.44x = 38,544.84 × 15,356.40
  4. Step 4: Simplify right side
    27,931.44x = 591,909,980.98
  5. Step 5: Solve for x
    x = 591,909,980.98/27,931.44
  6. Step 6: Final answer
    x = 21,191.53

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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.