Home / 13,988.16-20,985.48-4,627.80

Finding the Fourth Proportional to 13,988.16, 20,985.48 and 4,627.80

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Solution

The fourth proportional to 13,988.16, 20,985.48 and 4,627.80 is: 6,942.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.16 : 20,985.48 = 4,627.80 : x
  2. Step 2: Convert to fraction form
    13,988.16/20,985.48 = 4,627.80/x
  3. Step 3: Cross multiply
    13,988.16x = 20,985.48 × 4,627.80
  4. Step 4: Simplify right side
    13,988.16x = 97,116,604.34
  5. Step 5: Solve for x
    x = 97,116,604.34/13,988.16
  6. Step 6: Final answer
    x = 6,942.77

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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.