Home / 21,646.18-29,870.40-12,085.44

Finding the Fourth Proportional to 21,646.18, 29,870.40 and 12,085.44

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Solution

The fourth proportional to 21,646.18, 29,870.40 and 12,085.44 is: 16,677.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,646.18 : 29,870.40 = 12,085.44 : x
  2. Step 2: Convert to fraction form
    21,646.18/29,870.40 = 12,085.44/x
  3. Step 3: Cross multiply
    21,646.18x = 29,870.40 × 12,085.44
  4. Step 4: Simplify right side
    21,646.18x = 360,996,926.98
  5. Step 5: Solve for x
    x = 360,996,926.98/21,646.18
  6. Step 6: Final answer
    x = 16,677.17

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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.