Home / 30,750.81-42,438.57-17,321.22

Finding the Fourth Proportional to 30,750.81, 42,438.57 and 17,321.22

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Solution

The fourth proportional to 30,750.81, 42,438.57 and 17,321.22 is: 23,904.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,750.81 : 42,438.57 = 17,321.22 : x
  2. Step 2: Convert to fraction form
    30,750.81/42,438.57 = 17,321.22/x
  3. Step 3: Cross multiply
    30,750.81x = 42,438.57 × 17,321.22
  4. Step 4: Simplify right side
    30,750.81x = 735,087,807.46
  5. Step 5: Solve for x
    x = 735,087,807.46/30,750.81
  6. Step 6: Final answer
    x = 23,904.66

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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.