Home / 21,157.84-31,615.32-16,132.60

Finding the Fourth Proportional to 21,157.84, 31,615.32 and 16,132.60

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Solution

The fourth proportional to 21,157.84, 31,615.32 and 16,132.60 is: 24,106.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,157.84 : 31,615.32 = 16,132.60 : x
  2. Step 2: Convert to fraction form
    21,157.84/31,615.32 = 16,132.60/x
  3. Step 3: Cross multiply
    21,157.84x = 31,615.32 × 16,132.60
  4. Step 4: Simplify right side
    21,157.84x = 510,037,072.69
  5. Step 5: Solve for x
    x = 510,037,072.69/21,157.84
  6. Step 6: Final answer
    x = 24,106.30

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1.5x scale

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.