Home / 21,492.40-32,081.41-19,909.39

Finding the Fourth Proportional to 21,492.40, 32,081.41 and 19,909.39

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Solution

The fourth proportional to 21,492.40, 32,081.41 and 19,909.39 is: 29,718.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,492.40 : 32,081.41 = 19,909.39 : x
  2. Step 2: Convert to fraction form
    21,492.40/32,081.41 = 19,909.39/x
  3. Step 3: Cross multiply
    21,492.40x = 32,081.41 × 19,909.39
  4. Step 4: Simplify right side
    21,492.40x = 638,721,271.72
  5. Step 5: Solve for x
    x = 638,721,271.72/21,492.40
  6. Step 6: Final answer
    x = 29,718.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.