Home / 42,728.61-64,093.07-13,146.24

Finding the Fourth Proportional to 42,728.61, 64,093.07 and 13,146.24

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Solution

The fourth proportional to 42,728.61, 64,093.07 and 13,146.24 is: 19,719.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,728.61 : 64,093.07 = 13,146.24 : x
  2. Step 2: Convert to fraction form
    42,728.61/64,093.07 = 13,146.24/x
  3. Step 3: Cross multiply
    42,728.61x = 64,093.07 × 13,146.24
  4. Step 4: Simplify right side
    42,728.61x = 842,582,880.56
  5. Step 5: Solve for x
    x = 842,582,880.56/42,728.61
  6. Step 6: Final answer
    x = 19,719.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.