Home / 30,495.63-45,795.80-18,718.56

Finding the Fourth Proportional to 30,495.63, 45,795.80 and 18,718.56

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Solution

The fourth proportional to 30,495.63, 45,795.80 and 18,718.56 is: 28,109.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,495.63 : 45,795.80 = 18,718.56 : x
  2. Step 2: Convert to fraction form
    30,495.63/45,795.80 = 18,718.56/x
  3. Step 3: Cross multiply
    30,495.63x = 45,795.80 × 18,718.56
  4. Step 4: Simplify right side
    30,495.63x = 857,231,430.05
  5. Step 5: Solve for x
    x = 857,231,430.05/30,495.63
  6. Step 6: Final answer
    x = 28,109.98

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1.5x scale

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.