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Finding the Fourth Proportional to 9,876.40, 14,814.60 and 8,904.40

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Solution

The fourth proportional to 9,876.40, 14,814.60 and 8,904.40 is: 13,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,876.40 : 14,814.60 = 8,904.40 : x
  2. Step 2: Convert to fraction form
    9,876.40/14,814.60 = 8,904.40/x
  3. Step 3: Cross multiply
    9,876.40x = 14,814.60 × 8,904.40
  4. Step 4: Simplify right side
    9,876.40x = 131,915,124.24
  5. Step 5: Solve for x
    x = 131,915,124.24/9,876.40
  6. Step 6: Final answer
    x = 13,356.60

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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.