Home / 21,322.89-31,985.15-5,740.92

Finding the Fourth Proportional to 21,322.89, 31,985.15 and 5,740.92

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Solution

The fourth proportional to 21,322.89, 31,985.15 and 5,740.92 is: 8,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,322.89 : 31,985.15 = 5,740.92 : x
  2. Step 2: Convert to fraction form
    21,322.89/31,985.15 = 5,740.92/x
  3. Step 3: Cross multiply
    21,322.89x = 31,985.15 × 5,740.92
  4. Step 4: Simplify right side
    21,322.89x = 183,624,158.63
  5. Step 5: Solve for x
    x = 183,624,158.63/21,322.89
  6. Step 6: Final answer
    x = 8,611.60

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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.