Home / 30,089.86-45,140.43-13,450.55

Finding the Fourth Proportional to 30,089.86, 45,140.43 and 13,450.55

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Solution

The fourth proportional to 30,089.86, 45,140.43 and 13,450.55 is: 20,178.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,089.86 : 45,140.43 = 13,450.55 : x
  2. Step 2: Convert to fraction form
    30,089.86/45,140.43 = 13,450.55/x
  3. Step 3: Cross multiply
    30,089.86x = 45,140.43 × 13,450.55
  4. Step 4: Simplify right side
    30,089.86x = 607,163,610.74
  5. Step 5: Solve for x
    x = 607,163,610.74/30,089.86
  6. Step 6: Final answer
    x = 20,178.35

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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.