Home / 30,930.81-46,390.95-10,154.31

Finding the Fourth Proportional to 30,930.81, 46,390.95 and 10,154.31

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Solution

The fourth proportional to 30,930.81, 46,390.95 and 10,154.31 is: 15,229.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,930.81 : 46,390.95 = 10,154.31 : x
  2. Step 2: Convert to fraction form
    30,930.81/46,390.95 = 10,154.31/x
  3. Step 3: Cross multiply
    30,930.81x = 46,390.95 × 10,154.31
  4. Step 4: Simplify right side
    30,930.81x = 471,068,087.49
  5. Step 5: Solve for x
    x = 471,068,087.49/30,930.81
  6. Step 6: Final answer
    x = 15,229.74

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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.