Home / 15,363.88-21,160.74-13,264.36

Finding the Fourth Proportional to 15,363.88, 21,160.74 and 13,264.36

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Solution

The fourth proportional to 15,363.88, 21,160.74 and 13,264.36 is: 18,269.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,363.88 : 21,160.74 = 13,264.36 : x
  2. Step 2: Convert to fraction form
    15,363.88/21,160.74 = 13,264.36/x
  3. Step 3: Cross multiply
    15,363.88x = 21,160.74 × 13,264.36
  4. Step 4: Simplify right side
    15,363.88x = 280,683,673.23
  5. Step 5: Solve for x
    x = 280,683,673.23/15,363.88
  6. Step 6: Final answer
    x = 18,269.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.