Home / 20,421,314.70-28,182,808.32-12,477,258.33

Finding the Fourth Proportional to 20,421,314.70, 28,182,808.32 and 12,477,258.33

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Solution

The fourth proportional to 20,421,314.70, 28,182,808.32 and 12,477,258.33 is: 17,219,468.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,314.70 : 28,182,808.32 = 12,477,258.33 : x
  2. Step 2: Convert to fraction form
    20,421,314.70/28,182,808.32 = 12,477,258.33/x
  3. Step 3: Cross multiply
    20,421,314.70x = 28,182,808.32 × 12,477,258.33
  4. Step 4: Simplify right side
    20,421,314.70x = 351,644,179,873,513.31
  5. Step 5: Solve for x
    x = 351,644,179,873,513.31/20,421,314.70
  6. Step 6: Final answer
    x = 17,219,468.24

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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.