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Finding the Fourth Proportional to 30,693.60, 45,975.60 and 25,509.60

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Solution

The fourth proportional to 30,693.60, 45,975.60 and 25,509.60 is: 38,210.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,693.60 : 45,975.60 = 25,509.60 : x
  2. Step 2: Convert to fraction form
    30,693.60/45,975.60 = 25,509.60/x
  3. Step 3: Cross multiply
    30,693.60x = 45,975.60 × 25,509.60
  4. Step 4: Simplify right side
    30,693.60x = 1,172,819,165.76
  5. Step 5: Solve for x
    x = 1,172,819,165.76/30,693.60
  6. Step 6: Final answer
    x = 38,210.54

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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.