Home / 28,485.12-42,722.66-7,703.76

Finding the Fourth Proportional to 28,485.12, 42,722.66 and 7,703.76

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Solution

The fourth proportional to 28,485.12, 42,722.66 and 7,703.76 is: 11,554.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,485.12 : 42,722.66 = 7,703.76 : x
  2. Step 2: Convert to fraction form
    28,485.12/42,722.66 = 7,703.76/x
  3. Step 3: Cross multiply
    28,485.12x = 42,722.66 × 7,703.76
  4. Step 4: Simplify right side
    28,485.12x = 329,125,119.20
  5. Step 5: Solve for x
    x = 329,125,119.20/28,485.12
  6. Step 6: Final answer
    x = 11,554.28

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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.