Home / 18,678,219.70-28,017,329.55-5,215,026.10

Finding the Fourth Proportional to 18,678,219.70, 28,017,329.55 and 5,215,026.10

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Solution

The fourth proportional to 18,678,219.70, 28,017,329.55 and 5,215,026.10 is: 7,822,539.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678,219.70 : 28,017,329.55 = 5,215,026.10 : x
  2. Step 2: Convert to fraction form
    18,678,219.70/28,017,329.55 = 5,215,026.10/x
  3. Step 3: Cross multiply
    18,678,219.70x = 28,017,329.55 × 5,215,026.10
  4. Step 4: Simplify right side
    18,678,219.70x = 146,111,104,855,551.25
  5. Step 5: Solve for x
    x = 146,111,104,855,551.25/18,678,219.70
  6. Step 6: Final answer
    x = 7,822,539.15

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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.