Home / 30,188.16-45,218.40-19,089.12

Finding the Fourth Proportional to 30,188.16, 45,218.40 and 19,089.12

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Solution

The fourth proportional to 30,188.16, 45,218.40 and 19,089.12 is: 28,593.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,188.16 : 45,218.40 = 19,089.12 : x
  2. Step 2: Convert to fraction form
    30,188.16/45,218.40 = 19,089.12/x
  3. Step 3: Cross multiply
    30,188.16x = 45,218.40 × 19,089.12
  4. Step 4: Simplify right side
    30,188.16x = 863,179,463.81
  5. Step 5: Solve for x
    x = 863,179,463.81/30,188.16
  6. Step 6: Final answer
    x = 28,593.31

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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.