Home / 21,208.61-31,804.80-6,973.76

Finding the Fourth Proportional to 21,208.61, 31,804.80 and 6,973.76

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Solution

The fourth proportional to 21,208.61, 31,804.80 and 6,973.76 is: 10,457.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.61 : 31,804.80 = 6,973.76 : x
  2. Step 2: Convert to fraction form
    21,208.61/31,804.80 = 6,973.76/x
  3. Step 3: Cross multiply
    21,208.61x = 31,804.80 × 6,973.76
  4. Step 4: Simplify right side
    21,208.61x = 221,798,883.02
  5. Step 5: Solve for x
    x = 221,798,883.02/21,208.61
  6. Step 6: Final answer
    x = 10,457.97

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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.