Home / 30,130.47-41,528.17-20,040.89

Finding the Fourth Proportional to 30,130.47, 41,528.17 and 20,040.89

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Solution

The fourth proportional to 30,130.47, 41,528.17 and 20,040.89 is: 27,621.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,130.47 : 41,528.17 = 20,040.89 : x
  2. Step 2: Convert to fraction form
    30,130.47/41,528.17 = 20,040.89/x
  3. Step 3: Cross multiply
    30,130.47x = 41,528.17 × 20,040.89
  4. Step 4: Simplify right side
    30,130.47x = 832,261,229.13
  5. Step 5: Solve for x
    x = 832,261,229.13/30,130.47
  6. Step 6: Final answer
    x = 27,621.91

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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.