Home / 21,415.86-32,110.08-10,300.41

Finding the Fourth Proportional to 21,415.86, 32,110.08 and 10,300.41

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Solution

The fourth proportional to 21,415.86, 32,110.08 and 10,300.41 is: 15,444.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.86 : 32,110.08 = 10,300.41 : x
  2. Step 2: Convert to fraction form
    21,415.86/32,110.08 = 10,300.41/x
  3. Step 3: Cross multiply
    21,415.86x = 32,110.08 × 10,300.41
  4. Step 4: Simplify right side
    21,415.86x = 330,746,989.13
  5. Step 5: Solve for x
    x = 330,746,989.13/21,415.86
  6. Step 6: Final answer
    x = 15,444.02

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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.