Home / 20,781,258.10-28,679,021.85-11,613,900.58

Finding the Fourth Proportional to 20,781,258.10, 28,679,021.85 and 11,613,900.58

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Solution

The fourth proportional to 20,781,258.10, 28,679,021.85 and 11,613,900.58 is: 16,027,677.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,258.10 : 28,679,021.85 = 11,613,900.58 : x
  2. Step 2: Convert to fraction form
    20,781,258.10/28,679,021.85 = 11,613,900.58/x
  3. Step 3: Cross multiply
    20,781,258.10x = 28,679,021.85 × 11,613,900.58
  4. Step 4: Simplify right side
    20,781,258.10x = 333,075,308,497,547.69
  5. Step 5: Solve for x
    x = 333,075,308,497,547.69/20,781,258.10
  6. Step 6: Final answer
    x = 16,027,677.77

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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.