Home / 15,798.95-21,777.36-12,436.44

Finding the Fourth Proportional to 15,798.95, 21,777.36 and 12,436.44

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Solution

The fourth proportional to 15,798.95, 21,777.36 and 12,436.44 is: 17,142.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,798.95 : 21,777.36 = 12,436.44 : x
  2. Step 2: Convert to fraction form
    15,798.95/21,777.36 = 12,436.44/x
  3. Step 3: Cross multiply
    15,798.95x = 21,777.36 × 12,436.44
  4. Step 4: Simplify right side
    15,798.95x = 270,832,702.70
  5. Step 5: Solve for x
    x = 270,832,702.70/15,798.95
  6. Step 6: Final answer
    x = 17,142.45

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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.