Home / 28,139.04-38,831.88-16,963.20

Finding the Fourth Proportional to 28,139.04, 38,831.88 and 16,963.20

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Solution

The fourth proportional to 28,139.04, 38,831.88 and 16,963.20 is: 23,409.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.04 : 38,831.88 = 16,963.20 : x
  2. Step 2: Convert to fraction form
    28,139.04/38,831.88 = 16,963.20/x
  3. Step 3: Cross multiply
    28,139.04x = 38,831.88 × 16,963.20
  4. Step 4: Simplify right side
    28,139.04x = 658,712,946.82
  5. Step 5: Solve for x
    x = 658,712,946.82/28,139.04
  6. Step 6: Final answer
    x = 23,409.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.