Home / 21,141,792.75-31,712,689.13-5,185,440.75

Finding the Fourth Proportional to 21,141,792.75, 31,712,689.13 and 5,185,440.75

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Solution

The fourth proportional to 21,141,792.75, 31,712,689.13 and 5,185,440.75 is: 7,778,161.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141,792.75 : 31,712,689.13 = 5,185,440.75 : x
  2. Step 2: Convert to fraction form
    21,141,792.75/31,712,689.13 = 5,185,440.75/x
  3. Step 3: Cross multiply
    21,141,792.75x = 31,712,689.13 × 5,185,440.75
  4. Step 4: Simplify right side
    21,141,792.75x = 164,444,270,480,856.84
  5. Step 5: Solve for x
    x = 164,444,270,480,856.84/21,141,792.75
  6. Step 6: Final answer
    x = 7,778,161.13

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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.