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Finding the Fourth Proportional to 10,011.99, 15,019.70 and 4,465.21

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Solution

The fourth proportional to 10,011.99, 15,019.70 and 4,465.21 is: 6,698.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,011.99 : 15,019.70 = 4,465.21 : x
  2. Step 2: Convert to fraction form
    10,011.99/15,019.70 = 4,465.21/x
  3. Step 3: Cross multiply
    10,011.99x = 15,019.70 × 4,465.21
  4. Step 4: Simplify right side
    10,011.99x = 67,066,114.64
  5. Step 5: Solve for x
    x = 67,066,114.64/10,011.99
  6. Step 6: Final answer
    x = 6,698.58

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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.