Home / 19,616.10-29,427.18-7,139.28

Finding the Fourth Proportional to 19,616.10, 29,427.18 and 7,139.28

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Solution

The fourth proportional to 19,616.10, 29,427.18 and 7,139.28 is: 10,710.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,616.10 : 29,427.18 = 7,139.28 : x
  2. Step 2: Convert to fraction form
    19,616.10/29,427.18 = 7,139.28/x
  3. Step 3: Cross multiply
    19,616.10x = 29,427.18 × 7,139.28
  4. Step 4: Simplify right side
    19,616.10x = 210,088,877.63
  5. Step 5: Solve for x
    x = 210,088,877.63/19,616.10
  6. Step 6: Final answer
    x = 10,710.02

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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.