Home / 28,019.10-42,029.50-10,485.56

Finding the Fourth Proportional to 28,019.10, 42,029.50 and 10,485.56

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Solution

The fourth proportional to 28,019.10, 42,029.50 and 10,485.56 is: 15,728.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,019.10 : 42,029.50 = 10,485.56 : x
  2. Step 2: Convert to fraction form
    28,019.10/42,029.50 = 10,485.56/x
  3. Step 3: Cross multiply
    28,019.10x = 42,029.50 × 10,485.56
  4. Step 4: Simplify right side
    28,019.10x = 440,702,844.02
  5. Step 5: Solve for x
    x = 440,702,844.02/28,019.10
  6. Step 6: Final answer
    x = 15,728.66

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1.5x scale

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.