Home / 19,220.95-28,831.43-8,124.76

Finding the Fourth Proportional to 19,220.95, 28,831.43 and 8,124.76

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Solution

The fourth proportional to 19,220.95, 28,831.43 and 8,124.76 is: 12,187.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,220.95 : 28,831.43 = 8,124.76 : x
  2. Step 2: Convert to fraction form
    19,220.95/28,831.43 = 8,124.76/x
  3. Step 3: Cross multiply
    19,220.95x = 28,831.43 × 8,124.76
  4. Step 4: Simplify right side
    19,220.95x = 234,248,449.21
  5. Step 5: Solve for x
    x = 234,248,449.21/19,220.95
  6. Step 6: Final answer
    x = 12,187.14

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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.