Home / 21,141,792-31,712,688-5,185,440

Finding the Fourth Proportional to 21,141,792, 31,712,688 and 5,185,440

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Solution

The fourth proportional to 21,141,792, 31,712,688 and 5,185,440 is: 7,778,160

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141,792 : 31,712,688 = 5,185,440 : x
  2. Step 2: Convert to fraction form
    21,141,792/31,712,688 = 5,185,440/x
  3. Step 3: Cross multiply
    21,141,792x = 31,712,688 × 5,185,440
  4. Step 4: Simplify right side
    21,141,792x = 164,444,240,862,720
  5. Step 5: Solve for x
    x = 164,444,240,862,720/21,141,792
  6. Step 6: Final answer
    x = 7,778,160

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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.