Home / 21,210,680.61-31,829,973.12-11,632,785.21

Finding the Fourth Proportional to 21,210,680.61, 31,829,973.12 and 11,632,785.21

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Solution

The fourth proportional to 21,210,680.61, 31,829,973.12 and 11,632,785.21 is: 17,456,829.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210,680.61 : 31,829,973.12 = 11,632,785.21 : x
  2. Step 2: Convert to fraction form
    21,210,680.61/31,829,973.12 = 11,632,785.21/x
  3. Step 3: Cross multiply
    21,210,680.61x = 31,829,973.12 × 11,632,785.21
  4. Step 4: Simplify right side
    21,210,680.61x = 370,271,240,545,033.62
  5. Step 5: Solve for x
    x = 370,271,240,545,033.62/21,210,680.61
  6. Step 6: Final answer
    x = 17,456,829.76

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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.