Home / 15,004,330.51-20,705,997.59-8,128,812.37

Finding the Fourth Proportional to 15,004,330.51, 20,705,997.59 and 8,128,812.37

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Solution

The fourth proportional to 15,004,330.51, 20,705,997.59 and 8,128,812.37 is: 11,217,772.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004,330.51 : 20,705,997.59 = 8,128,812.37 : x
  2. Step 2: Convert to fraction form
    15,004,330.51/20,705,997.59 = 8,128,812.37/x
  3. Step 3: Cross multiply
    15,004,330.51x = 20,705,997.59 × 8,128,812.37
  4. Step 4: Simplify right side
    15,004,330.51x = 168,315,169,342,782.19
  5. Step 5: Solve for x
    x = 168,315,169,342,782.19/15,004,330.51
  6. Step 6: Final answer
    x = 11,217,772.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.