Home / 10,089.80-15,135.08-5,153.67

Finding the Fourth Proportional to 10,089.80, 15,135.08 and 5,153.67

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Solution

The fourth proportional to 10,089.80, 15,135.08 and 5,153.67 is: 7,730.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,089.80 : 15,135.08 = 5,153.67 : x
  2. Step 2: Convert to fraction form
    10,089.80/15,135.08 = 5,153.67/x
  3. Step 3: Cross multiply
    10,089.80x = 15,135.08 × 5,153.67
  4. Step 4: Simplify right side
    10,089.80x = 78,001,181.98
  5. Step 5: Solve for x
    x = 78,001,181.98/10,089.80
  6. Step 6: Final answer
    x = 7,730.70

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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.