Home / 30,438.28-42,004.02-17,009.64

Finding the Fourth Proportional to 30,438.28, 42,004.02 and 17,009.64

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Solution

The fourth proportional to 30,438.28, 42,004.02 and 17,009.64 is: 23,472.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,438.28 : 42,004.02 = 17,009.64 : x
  2. Step 2: Convert to fraction form
    30,438.28/42,004.02 = 17,009.64/x
  3. Step 3: Cross multiply
    30,438.28x = 42,004.02 × 17,009.64
  4. Step 4: Simplify right side
    30,438.28x = 714,473,258.75
  5. Step 5: Solve for x
    x = 714,473,258.75/30,438.28
  6. Step 6: Final answer
    x = 23,472.85

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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.