Home / 21,964.90-30,303.66-12,528

Finding the Fourth Proportional to 21,964.90, 30,303.66 and 12,528

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Solution

The fourth proportional to 21,964.90, 30,303.66 and 12,528 is: 17,284.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,964.90 : 30,303.66 = 12,528 : x
  2. Step 2: Convert to fraction form
    21,964.90/30,303.66 = 12,528/x
  3. Step 3: Cross multiply
    21,964.90x = 30,303.66 × 12,528
  4. Step 4: Simplify right side
    21,964.90x = 379,644,252.48
  5. Step 5: Solve for x
    x = 379,644,252.48/21,964.90
  6. Step 6: Final answer
    x = 17,284.13

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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.