Home / 19,119.84-28,641.36-8,717.28

Finding the Fourth Proportional to 19,119.84, 28,641.36 and 8,717.28

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Solution

The fourth proportional to 19,119.84, 28,641.36 and 8,717.28 is: 13,058.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,119.84 : 28,641.36 = 8,717.28 : x
  2. Step 2: Convert to fraction form
    19,119.84/28,641.36 = 8,717.28/x
  3. Step 3: Cross multiply
    19,119.84x = 28,641.36 × 8,717.28
  4. Step 4: Simplify right side
    19,119.84x = 249,674,754.70
  5. Step 5: Solve for x
    x = 249,674,754.70/19,119.84
  6. Step 6: Final answer
    x = 13,058.41

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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.