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Finding the Fourth Proportional to 12,807.10, 19,225.05 and 9,898.30

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Solution

The fourth proportional to 12,807.10, 19,225.05 and 9,898.30 is: 14,858.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.10 : 19,225.05 = 9,898.30 : x
  2. Step 2: Convert to fraction form
    12,807.10/19,225.05 = 9,898.30/x
  3. Step 3: Cross multiply
    12,807.10x = 19,225.05 × 9,898.30
  4. Step 4: Simplify right side
    12,807.10x = 190,295,312.42
  5. Step 5: Solve for x
    x = 190,295,312.42/12,807.10
  6. Step 6: Final answer
    x = 14,858.58

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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.