Home / 28,488.99-42,728.55-7,707.63

Finding the Fourth Proportional to 28,488.99, 42,728.55 and 7,707.63

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Solution

The fourth proportional to 28,488.99, 42,728.55 and 7,707.63 is: 11,560.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,488.99 : 42,728.55 = 7,707.63 : x
  2. Step 2: Convert to fraction form
    28,488.99/42,728.55 = 7,707.63/x
  3. Step 3: Cross multiply
    28,488.99x = 42,728.55 × 7,707.63
  4. Step 4: Simplify right side
    28,488.99x = 329,335,853.84
  5. Step 5: Solve for x
    x = 329,335,853.84/28,488.99
  6. Step 6: Final answer
    x = 11,560.11

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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.