Home / 31,638,695.31-43,661,006.37-18,587,143.98

Finding the Fourth Proportional to 31,638,695.31, 43,661,006.37 and 18,587,143.98

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Solution

The fourth proportional to 31,638,695.31, 43,661,006.37 and 18,587,143.98 is: 25,650,027.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,638,695.31 : 43,661,006.37 = 18,587,143.98 : x
  2. Step 2: Convert to fraction form
    31,638,695.31/43,661,006.37 = 18,587,143.98/x
  3. Step 3: Cross multiply
    31,638,695.31x = 43,661,006.37 × 18,587,143.98
  4. Step 4: Simplify right side
    31,638,695.31x = 811,533,411,710,887.12
  5. Step 5: Solve for x
    x = 811,533,411,710,887.12/31,638,695.31
  6. Step 6: Final answer
    x = 25,650,027.72

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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.