Home / 15,442,691.15-21,302,059.78-9,631,383.77

Finding the Fourth Proportional to 15,442,691.15, 21,302,059.78 and 9,631,383.77

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Solution

The fourth proportional to 15,442,691.15, 21,302,059.78 and 9,631,383.77 is: 13,285,787.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,442,691.15 : 21,302,059.78 = 9,631,383.77 : x
  2. Step 2: Convert to fraction form
    15,442,691.15/21,302,059.78 = 9,631,383.77/x
  3. Step 3: Cross multiply
    15,442,691.15x = 21,302,059.78 × 9,631,383.77
  4. Step 4: Simplify right side
    15,442,691.15x = 205,168,312,832,661.78
  5. Step 5: Solve for x
    x = 205,168,312,832,661.78/15,442,691.15
  6. Step 6: Final answer
    x = 13,285,787.49

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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.