Home / 13,988.15-20,985.84-5,223.14

Finding the Fourth Proportional to 13,988.15, 20,985.84 and 5,223.14

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Solution

The fourth proportional to 13,988.15, 20,985.84 and 5,223.14 is: 7,836.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.15 : 20,985.84 = 5,223.14 : x
  2. Step 2: Convert to fraction form
    13,988.15/20,985.84 = 5,223.14/x
  3. Step 3: Cross multiply
    13,988.15x = 20,985.84 × 5,223.14
  4. Step 4: Simplify right side
    13,988.15x = 109,611,980.34
  5. Step 5: Solve for x
    x = 109,611,980.34/13,988.15
  6. Step 6: Final answer
    x = 7,836.06

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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.