Home / 20,781,258.60-28,679,022.54-11,613,901.08

Finding the Fourth Proportional to 20,781,258.60, 28,679,022.54 and 11,613,901.08

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Solution

The fourth proportional to 20,781,258.60, 28,679,022.54 and 11,613,901.08 is: 16,027,678.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,258.60 : 28,679,022.54 = 11,613,901.08 : x
  2. Step 2: Convert to fraction form
    20,781,258.60/28,679,022.54 = 11,613,901.08/x
  3. Step 3: Cross multiply
    20,781,258.60x = 28,679,022.54 × 11,613,901.08
  4. Step 4: Simplify right side
    20,781,258.60x = 333,075,330,850,650.31
  5. Step 5: Solve for x
    x = 333,075,330,850,650.31/20,781,258.60
  6. Step 6: Final answer
    x = 16,027,678.46

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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.