Home / 30,901.95-42,642.93-18,153.15

Finding the Fourth Proportional to 30,901.95, 42,642.93 and 18,153.15

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Solution

The fourth proportional to 30,901.95, 42,642.93 and 18,153.15 is: 25,050.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,901.95 : 42,642.93 = 18,153.15 : x
  2. Step 2: Convert to fraction form
    30,901.95/42,642.93 = 18,153.15/x
  3. Step 3: Cross multiply
    30,901.95x = 42,642.93 × 18,153.15
  4. Step 4: Simplify right side
    30,901.95x = 774,103,504.73
  5. Step 5: Solve for x
    x = 774,103,504.73/30,901.95
  6. Step 6: Final answer
    x = 25,050.31

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Double scale
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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.