Home / 21,018,319.72-29,005,603.14-12,314,409.64

Finding the Fourth Proportional to 21,018,319.72, 29,005,603.14 and 12,314,409.64

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Solution

The fourth proportional to 21,018,319.72, 29,005,603.14 and 12,314,409.64 is: 16,994,073.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,018,319.72 : 29,005,603.14 = 12,314,409.64 : x
  2. Step 2: Convert to fraction form
    21,018,319.72/29,005,603.14 = 12,314,409.64/x
  3. Step 3: Cross multiply
    21,018,319.72x = 29,005,603.14 × 12,314,409.64
  4. Step 4: Simplify right side
    21,018,319.72x = 357,186,878,921,230.31
  5. Step 5: Solve for x
    x = 357,186,878,921,230.31/21,018,319.72
  6. Step 6: Final answer
    x = 16,994,073.92

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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.