Home / 30,838.15-42,521.16-22,783.45

Finding the Fourth Proportional to 30,838.15, 42,521.16 and 22,783.45

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Solution

The fourth proportional to 30,838.15, 42,521.16 and 22,783.45 is: 31,414.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,838.15 : 42,521.16 = 22,783.45 : x
  2. Step 2: Convert to fraction form
    30,838.15/42,521.16 = 22,783.45/x
  3. Step 3: Cross multiply
    30,838.15x = 42,521.16 × 22,783.45
  4. Step 4: Simplify right side
    30,838.15x = 968,778,722.80
  5. Step 5: Solve for x
    x = 968,778,722.80/30,838.15
  6. Step 6: Final answer
    x = 31,414.94

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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.