Home / 21,458,428.25-29,613,409.70-12,292,842.47

Finding the Fourth Proportional to 21,458,428.25, 29,613,409.70 and 12,292,842.47

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Solution

The fourth proportional to 21,458,428.25, 29,613,409.70 and 12,292,842.47 is: 16,964,568.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,458,428.25 : 29,613,409.70 = 12,292,842.47 : x
  2. Step 2: Convert to fraction form
    21,458,428.25/29,613,409.70 = 12,292,842.47/x
  3. Step 3: Cross multiply
    21,458,428.25x = 29,613,409.70 × 12,292,842.47
  4. Step 4: Simplify right side
    21,458,428.25x = 364,032,980,232,138.69
  5. Step 5: Solve for x
    x = 364,032,980,232,138.69/21,458,428.25
  6. Step 6: Final answer
    x = 16,964,568.70

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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.