Home / 21,248.55-31,871.16-6,457.53

Finding the Fourth Proportional to 21,248.55, 31,871.16 and 6,457.53

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Solution

The fourth proportional to 21,248.55, 31,871.16 and 6,457.53 is: 9,685.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,248.55 : 31,871.16 = 6,457.53 : x
  2. Step 2: Convert to fraction form
    21,248.55/31,871.16 = 6,457.53/x
  3. Step 3: Cross multiply
    21,248.55x = 31,871.16 × 6,457.53
  4. Step 4: Simplify right side
    21,248.55x = 205,808,971.83
  5. Step 5: Solve for x
    x = 205,808,971.83/21,248.55
  6. Step 6: Final answer
    x = 9,685.79

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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.