Home / 21,117,139.31-29,141,652.26-11,459,347.31

Finding the Fourth Proportional to 21,117,139.31, 29,141,652.26 and 11,459,347.31

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Solution

The fourth proportional to 21,117,139.31, 29,141,652.26 and 11,459,347.31 is: 15,813,899.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,117,139.31 : 29,141,652.26 = 11,459,347.31 : x
  2. Step 2: Convert to fraction form
    21,117,139.31/29,141,652.26 = 11,459,347.31/x
  3. Step 3: Cross multiply
    21,117,139.31x = 29,141,652.26 × 11,459,347.31
  4. Step 4: Simplify right side
    21,117,139.31x = 333,944,314,450,143.81
  5. Step 5: Solve for x
    x = 333,944,314,450,143.81/21,117,139.31
  6. Step 6: Final answer
    x = 15,813,899.29

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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.