Home / 28,659.80-42,728.07-27,931.47

Finding the Fourth Proportional to 28,659.80, 42,728.07 and 27,931.47

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Solution

The fourth proportional to 28,659.80, 42,728.07 and 27,931.47 is: 41,642.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,659.80 : 42,728.07 = 27,931.47 : x
  2. Step 2: Convert to fraction form
    28,659.80/42,728.07 = 27,931.47/x
  3. Step 3: Cross multiply
    28,659.80x = 42,728.07 × 27,931.47
  4. Step 4: Simplify right side
    28,659.80x = 1,193,457,749.88
  5. Step 5: Solve for x
    x = 1,193,457,749.88/28,659.80
  6. Step 6: Final answer
    x = 41,642.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.