Home / 12,640,361-17,438,734.73-7,341,153.81

Finding the Fourth Proportional to 12,640,361, 17,438,734.73 and 7,341,153.81

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Solution

The fourth proportional to 12,640,361, 17,438,734.73 and 7,341,153.81 is: 10,127,909.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,640,361 : 17,438,734.73 = 7,341,153.81 : x
  2. Step 2: Convert to fraction form
    12,640,361/17,438,734.73 = 7,341,153.81/x
  3. Step 3: Cross multiply
    12,640,361x = 17,438,734.73 × 7,341,153.81
  4. Step 4: Simplify right side
    12,640,361x = 128,020,433,904,718.81
  5. Step 5: Solve for x
    x = 128,020,433,904,718.81/12,640,361
  6. Step 6: Final answer
    x = 10,127,909.63

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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.