Home / 28,509.27-42,764.93-9,789.21

Finding the Fourth Proportional to 28,509.27, 42,764.93 and 9,789.21

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Solution

The fourth proportional to 28,509.27, 42,764.93 and 9,789.21 is: 14,684.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509.27 : 42,764.93 = 9,789.21 : x
  2. Step 2: Convert to fraction form
    28,509.27/42,764.93 = 9,789.21/x
  3. Step 3: Cross multiply
    28,509.27x = 42,764.93 × 9,789.21
  4. Step 4: Simplify right side
    28,509.27x = 418,634,831.46
  5. Step 5: Solve for x
    x = 418,634,831.46/28,509.27
  6. Step 6: Final answer
    x = 14,684.17

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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.