Home / 19,760.30-29,643.34-6,428.92

Finding the Fourth Proportional to 19,760.30, 29,643.34 and 6,428.92

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Solution

The fourth proportional to 19,760.30, 29,643.34 and 6,428.92 is: 9,644.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,760.30 : 29,643.34 = 6,428.92 : x
  2. Step 2: Convert to fraction form
    19,760.30/29,643.34 = 6,428.92/x
  3. Step 3: Cross multiply
    19,760.30x = 29,643.34 × 6,428.92
  4. Step 4: Simplify right side
    19,760.30x = 190,574,661.39
  5. Step 5: Solve for x
    x = 190,574,661.39/19,760.30
  6. Step 6: Final answer
    x = 9,644.32

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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.