Home / 30,930.74-42,681.81-18,184.34

Finding the Fourth Proportional to 30,930.74, 42,681.81 and 18,184.34

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Solution

The fourth proportional to 30,930.74, 42,681.81 and 18,184.34 is: 25,092.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,930.74 : 42,681.81 = 18,184.34 : x
  2. Step 2: Convert to fraction form
    30,930.74/42,681.81 = 18,184.34/x
  3. Step 3: Cross multiply
    30,930.74x = 42,681.81 × 18,184.34
  4. Step 4: Simplify right side
    30,930.74x = 776,140,719.75
  5. Step 5: Solve for x
    x = 776,140,719.75/30,930.74
  6. Step 6: Final answer
    x = 25,092.86

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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.