Home / 20,278,415-30,421,436.09-8,148,840.07

Finding the Fourth Proportional to 20,278,415, 30,421,436.09 and 8,148,840.07

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Solution

The fourth proportional to 20,278,415, 30,421,436.09 and 8,148,840.07 is: 12,224,792.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278,415 : 30,421,436.09 = 8,148,840.07 : x
  2. Step 2: Convert to fraction form
    20,278,415/30,421,436.09 = 8,148,840.07/x
  3. Step 3: Cross multiply
    20,278,415x = 30,421,436.09 × 8,148,840.07
  4. Step 4: Simplify right side
    20,278,415x = 247,899,417,397,136.12
  5. Step 5: Solve for x
    x = 247,899,417,397,136.12/20,278,415
  6. Step 6: Final answer
    x = 12,224,792.59

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Double scale
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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.