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Finding the Fourth Proportional to 19,970.28, 29,955.42 and 6,119.28

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Solution

The fourth proportional to 19,970.28, 29,955.42 and 6,119.28 is: 9,178.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,970.28 : 29,955.42 = 6,119.28 : x
  2. Step 2: Convert to fraction form
    19,970.28/29,955.42 = 6,119.28/x
  3. Step 3: Cross multiply
    19,970.28x = 29,955.42 × 6,119.28
  4. Step 4: Simplify right side
    19,970.28x = 183,305,602.50
  5. Step 5: Solve for x
    x = 183,305,602.50/19,970.28
  6. Step 6: Final answer
    x = 9,178.92

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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.