Home / 10,864.48-14,987.90-6,388.16

Finding the Fourth Proportional to 10,864.48, 14,987.90 and 6,388.16

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Solution

The fourth proportional to 10,864.48, 14,987.90 and 6,388.16 is: 8,812.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,864.48 : 14,987.90 = 6,388.16 : x
  2. Step 2: Convert to fraction form
    10,864.48/14,987.90 = 6,388.16/x
  3. Step 3: Cross multiply
    10,864.48x = 14,987.90 × 6,388.16
  4. Step 4: Simplify right side
    10,864.48x = 95,745,103.26
  5. Step 5: Solve for x
    x = 95,745,103.26/10,864.48
  6. Step 6: Final answer
    x = 8,812.67

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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.