Home / 30,240,018.90-45,360,028.35-18,902,610.90

Finding the Fourth Proportional to 30,240,018.90, 45,360,028.35 and 18,902,610.90

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Solution

The fourth proportional to 30,240,018.90, 45,360,028.35 and 18,902,610.90 is: 28,353,916.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,240,018.90 : 45,360,028.35 = 18,902,610.90 : x
  2. Step 2: Convert to fraction form
    30,240,018.90/45,360,028.35 = 18,902,610.90/x
  3. Step 3: Cross multiply
    30,240,018.90x = 45,360,028.35 × 18,902,610.90
  4. Step 4: Simplify right side
    30,240,018.90x = 857,422,966,313,019
  5. Step 5: Solve for x
    x = 857,422,966,313,019/30,240,018.90
  6. Step 6: Final answer
    x = 28,353,916.35

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Similar ratio
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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.