Home / 21,376.86-32,064.57-9,681.90

Finding the Fourth Proportional to 21,376.86, 32,064.57 and 9,681.90

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Solution

The fourth proportional to 21,376.86, 32,064.57 and 9,681.90 is: 14,522.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,376.86 : 32,064.57 = 9,681.90 : x
  2. Step 2: Convert to fraction form
    21,376.86/32,064.57 = 9,681.90/x
  3. Step 3: Cross multiply
    21,376.86x = 32,064.57 × 9,681.90
  4. Step 4: Simplify right side
    21,376.86x = 310,445,960.28
  5. Step 5: Solve for x
    x = 310,445,960.28/21,376.86
  6. Step 6: Final answer
    x = 14,522.52

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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.