Home / 30,815.69-42,526.22-18,078.01

Finding the Fourth Proportional to 30,815.69, 42,526.22 and 18,078.01

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Solution

The fourth proportional to 30,815.69, 42,526.22 and 18,078.01 is: 24,947.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,815.69 : 42,526.22 = 18,078.01 : x
  2. Step 2: Convert to fraction form
    30,815.69/42,526.22 = 18,078.01/x
  3. Step 3: Cross multiply
    30,815.69x = 42,526.22 × 18,078.01
  4. Step 4: Simplify right side
    30,815.69x = 768,789,353.32
  5. Step 5: Solve for x
    x = 768,789,353.32/30,815.69
  6. Step 6: Final answer
    x = 24,947.98

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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.