Home / 21,888.58-30,206.04-12,457.66

Finding the Fourth Proportional to 21,888.58, 30,206.04 and 12,457.66

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Solution

The fourth proportional to 21,888.58, 30,206.04 and 12,457.66 is: 17,191.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,888.58 : 30,206.04 = 12,457.66 : x
  2. Step 2: Convert to fraction form
    21,888.58/30,206.04 = 12,457.66/x
  3. Step 3: Cross multiply
    21,888.58x = 30,206.04 × 12,457.66
  4. Step 4: Simplify right side
    21,888.58x = 376,296,576.27
  5. Step 5: Solve for x
    x = 376,296,576.27/21,888.58
  6. Step 6: Final answer
    x = 17,191.46

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1.5x scale

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.