Home / 30,122.57-45,193.30-18,127.81

Finding the Fourth Proportional to 30,122.57, 45,193.30 and 18,127.81

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Solution

The fourth proportional to 30,122.57, 45,193.30 and 18,127.81 is: 27,197.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,122.57 : 45,193.30 = 18,127.81 : x
  2. Step 2: Convert to fraction form
    30,122.57/45,193.30 = 18,127.81/x
  3. Step 3: Cross multiply
    30,122.57x = 45,193.30 × 18,127.81
  4. Step 4: Simplify right side
    30,122.57x = 819,255,681.38
  5. Step 5: Solve for x
    x = 819,255,681.38/30,122.57
  6. Step 6: Final answer
    x = 27,197.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.