Home / 30,810.24-42,518.70-18,072.56

Finding the Fourth Proportional to 30,810.24, 42,518.70 and 18,072.56

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Solution

The fourth proportional to 30,810.24, 42,518.70 and 18,072.56 is: 24,940.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.24 : 42,518.70 = 18,072.56 : x
  2. Step 2: Convert to fraction form
    30,810.24/42,518.70 = 18,072.56/x
  3. Step 3: Cross multiply
    30,810.24x = 42,518.70 × 18,072.56
  4. Step 4: Simplify right side
    30,810.24x = 768,421,756.87
  5. Step 5: Solve for x
    x = 768,421,756.87/30,810.24
  6. Step 6: Final answer
    x = 24,940.47

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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.