Home / 13,756.67-18,984.15-7,788.89

Finding the Fourth Proportional to 13,756.67, 18,984.15 and 7,788.89

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Solution

The fourth proportional to 13,756.67, 18,984.15 and 7,788.89 is: 10,748.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.67 : 18,984.15 = 7,788.89 : x
  2. Step 2: Convert to fraction form
    13,756.67/18,984.15 = 7,788.89/x
  3. Step 3: Cross multiply
    13,756.67x = 18,984.15 × 7,788.89
  4. Step 4: Simplify right side
    13,756.67x = 147,865,503.55
  5. Step 5: Solve for x
    x = 147,865,503.55/13,756.67
  6. Step 6: Final answer
    x = 10,748.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.