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Finding the Fourth Proportional to 19,502.40, 29,210.40 and 7,809.60

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Solution

The fourth proportional to 19,502.40, 29,210.40 and 7,809.60 is: 11,697.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,502.40 : 29,210.40 = 7,809.60 : x
  2. Step 2: Convert to fraction form
    19,502.40/29,210.40 = 7,809.60/x
  3. Step 3: Cross multiply
    19,502.40x = 29,210.40 × 7,809.60
  4. Step 4: Simplify right side
    19,502.40x = 228,121,539.84
  5. Step 5: Solve for x
    x = 228,121,539.84/19,502.40
  6. Step 6: Final answer
    x = 11,697.10

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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.