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Finding the Fourth Proportional to 13,055.60, 19,554.60 and 5,260.40

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Solution

The fourth proportional to 13,055.60, 19,554.60 and 5,260.40 is: 7,879.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.60 : 19,554.60 = 5,260.40 : x
  2. Step 2: Convert to fraction form
    13,055.60/19,554.60 = 5,260.40/x
  3. Step 3: Cross multiply
    13,055.60x = 19,554.60 × 5,260.40
  4. Step 4: Simplify right side
    13,055.60x = 102,865,017.84
  5. Step 5: Solve for x
    x = 102,865,017.84/13,055.60
  6. Step 6: Final answer
    x = 7,879.00

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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.