Home / 10,878.48-16,317.48-6,515.40

Finding the Fourth Proportional to 10,878.48, 16,317.48 and 6,515.40

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Solution

The fourth proportional to 10,878.48, 16,317.48 and 6,515.40 is: 9,772.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,878.48 : 16,317.48 = 6,515.40 : x
  2. Step 2: Convert to fraction form
    10,878.48/16,317.48 = 6,515.40/x
  3. Step 3: Cross multiply
    10,878.48x = 16,317.48 × 6,515.40
  4. Step 4: Simplify right side
    10,878.48x = 106,314,909.19
  5. Step 5: Solve for x
    x = 106,314,909.19/10,878.48
  6. Step 6: Final answer
    x = 9,772.96

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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.