Home / 30,018.42-45,045.45-13,379.40

Finding the Fourth Proportional to 30,018.42, 45,045.45 and 13,379.40

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Solution

The fourth proportional to 30,018.42, 45,045.45 and 13,379.40 is: 20,077.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,018.42 : 45,045.45 = 13,379.40 : x
  2. Step 2: Convert to fraction form
    30,018.42/45,045.45 = 13,379.40/x
  3. Step 3: Cross multiply
    30,018.42x = 45,045.45 × 13,379.40
  4. Step 4: Simplify right side
    30,018.42x = 602,681,093.73
  5. Step 5: Solve for x
    x = 602,681,093.73/30,018.42
  6. Step 6: Final answer
    x = 20,077.04

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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.