Home / 15,142.95-20,883.97-10,603.30

Finding the Fourth Proportional to 15,142.95, 20,883.97 and 10,603.30

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Solution

The fourth proportional to 15,142.95, 20,883.97 and 10,603.30 is: 14,623.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,142.95 : 20,883.97 = 10,603.30 : x
  2. Step 2: Convert to fraction form
    15,142.95/20,883.97 = 10,603.30/x
  3. Step 3: Cross multiply
    15,142.95x = 20,883.97 × 10,603.30
  4. Step 4: Simplify right side
    15,142.95x = 221,438,999.10
  5. Step 5: Solve for x
    x = 221,438,999.10/15,142.95
  6. Step 6: Final answer
    x = 14,623.24

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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.