Home / 28,507.19-42,760.80-7,730.69

Finding the Fourth Proportional to 28,507.19, 42,760.80 and 7,730.69

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Solution

The fourth proportional to 28,507.19, 42,760.80 and 7,730.69 is: 11,596.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.19 : 42,760.80 = 7,730.69 : x
  2. Step 2: Convert to fraction form
    28,507.19/42,760.80 = 7,730.69/x
  3. Step 3: Cross multiply
    28,507.19x = 42,760.80 × 7,730.69
  4. Step 4: Simplify right side
    28,507.19x = 330,570,275.15
  5. Step 5: Solve for x
    x = 330,570,275.15/28,507.19
  6. Step 6: Final answer
    x = 11,596.03

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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.