Home / 28,831.50-39,753.39-20,335.02

Finding the Fourth Proportional to 28,831.50, 39,753.39 and 20,335.02

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Solution

The fourth proportional to 28,831.50, 39,753.39 and 20,335.02 is: 28,038.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,831.50 : 39,753.39 = 20,335.02 : x
  2. Step 2: Convert to fraction form
    28,831.50/39,753.39 = 20,335.02/x
  3. Step 3: Cross multiply
    28,831.50x = 39,753.39 × 20,335.02
  4. Step 4: Simplify right side
    28,831.50x = 808,385,980.72
  5. Step 5: Solve for x
    x = 808,385,980.72/28,831.50
  6. Step 6: Final answer
    x = 28,038.29

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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.