Home / 15,345,739.36-21,177,122.16-8,470,223.28

Finding the Fourth Proportional to 15,345,739.36, 21,177,122.16 and 8,470,223.28

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Solution

The fourth proportional to 15,345,739.36, 21,177,122.16 and 8,470,223.28 is: 11,688,909.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,345,739.36 : 21,177,122.16 = 8,470,223.28 : x
  2. Step 2: Convert to fraction form
    15,345,739.36/21,177,122.16 = 8,470,223.28/x
  3. Step 3: Cross multiply
    15,345,739.36x = 21,177,122.16 × 8,470,223.28
  4. Step 4: Simplify right side
    15,345,739.36x = 179,374,953,123,035.88
  5. Step 5: Solve for x
    x = 179,374,953,123,035.88/15,345,739.36
  6. Step 6: Final answer
    x = 11,688,909.14

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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.