Home / 21,609,689.36-29,818,061.16-12,440,560.40

Finding the Fourth Proportional to 21,609,689.36, 29,818,061.16 and 12,440,560.40

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Solution

The fourth proportional to 21,609,689.36, 29,818,061.16 and 12,440,560.40 is: 17,166,067.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,609,689.36 : 29,818,061.16 = 12,440,560.40 : x
  2. Step 2: Convert to fraction form
    21,609,689.36/29,818,061.16 = 12,440,560.40/x
  3. Step 3: Cross multiply
    21,609,689.36x = 29,818,061.16 × 12,440,560.40
  4. Step 4: Simplify right side
    21,609,689.36x = 370,953,390,871,874.06
  5. Step 5: Solve for x
    x = 370,953,390,871,874.06/21,609,689.36
  6. Step 6: Final answer
    x = 17,166,067.72

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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.