Home / 30,660.92-42,256.95-22,689.30

Finding the Fourth Proportional to 30,660.92, 42,256.95 and 22,689.30

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Solution

The fourth proportional to 30,660.92, 42,256.95 and 22,689.30 is: 31,270.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,660.92 : 42,256.95 = 22,689.30 : x
  2. Step 2: Convert to fraction form
    30,660.92/42,256.95 = 22,689.30/x
  3. Step 3: Cross multiply
    30,660.92x = 42,256.95 × 22,689.30
  4. Step 4: Simplify right side
    30,660.92x = 958,780,615.64
  5. Step 5: Solve for x
    x = 958,780,615.64/30,660.92
  6. Step 6: Final answer
    x = 31,270.45

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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.