Home / 18,820,821.70-28,168,246.95-13,152,117.70

Finding the Fourth Proportional to 18,820,821.70, 28,168,246.95 and 13,152,117.70

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Solution

The fourth proportional to 18,820,821.70, 28,168,246.95 and 13,152,117.70 is: 19,684,161.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820,821.70 : 28,168,246.95 = 13,152,117.70 : x
  2. Step 2: Convert to fraction form
    18,820,821.70/28,168,246.95 = 13,152,117.70/x
  3. Step 3: Cross multiply
    18,820,821.70x = 28,168,246.95 × 13,152,117.70
  4. Step 4: Simplify right side
    18,820,821.70x = 370,472,099,289,066
  5. Step 5: Solve for x
    x = 370,472,099,289,066/18,820,821.70
  6. Step 6: Final answer
    x = 19,684,161.79

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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.