Home / 21,130,961.70-31,696,442.55-13,017,629.10

Finding the Fourth Proportional to 21,130,961.70, 31,696,442.55 and 13,017,629.10

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Solution

The fourth proportional to 21,130,961.70, 31,696,442.55 and 13,017,629.10 is: 19,526,443.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130,961.70 : 31,696,442.55 = 13,017,629.10 : x
  2. Step 2: Convert to fraction form
    21,130,961.70/31,696,442.55 = 13,017,629.10/x
  3. Step 3: Cross multiply
    21,130,961.70x = 31,696,442.55 × 13,017,629.10
  4. Step 4: Simplify right side
    21,130,961.70x = 412,612,532,905,358.19
  5. Step 5: Solve for x
    x = 412,612,532,905,358.19/21,130,961.70
  6. Step 6: Final answer
    x = 19,526,443.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.