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Finding the Fourth Proportional to 10,679.65, 16,019.75 and 2,888.40

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Solution

The fourth proportional to 10,679.65, 16,019.75 and 2,888.40 is: 4,332.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,679.65 : 16,019.75 = 2,888.40 : x
  2. Step 2: Convert to fraction form
    10,679.65/16,019.75 = 2,888.40/x
  3. Step 3: Cross multiply
    10,679.65x = 16,019.75 × 2,888.40
  4. Step 4: Simplify right side
    10,679.65x = 46,271,445.90
  5. Step 5: Solve for x
    x = 46,271,445.90/10,679.65
  6. Step 6: Final answer
    x = 4,332.67

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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.