Home / 21,561.81-32,320.80-16,356.75

Finding the Fourth Proportional to 21,561.81, 32,320.80 and 16,356.75

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Solution

The fourth proportional to 21,561.81, 32,320.80 and 16,356.75 is: 24,518.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.81 : 32,320.80 = 16,356.75 : x
  2. Step 2: Convert to fraction form
    21,561.81/32,320.80 = 16,356.75/x
  3. Step 3: Cross multiply
    21,561.81x = 32,320.80 × 16,356.75
  4. Step 4: Simplify right side
    21,561.81x = 528,663,245.40
  5. Step 5: Solve for x
    x = 528,663,245.40/21,561.81
  6. Step 6: Final answer
    x = 24,518.50

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1.5x scale

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.