Home / 18,749.15-28,123.73-7,509.60

Finding the Fourth Proportional to 18,749.15, 28,123.73 and 7,509.60

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Solution

The fourth proportional to 18,749.15, 28,123.73 and 7,509.60 is: 11,264.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.15 : 28,123.73 = 7,509.60 : x
  2. Step 2: Convert to fraction form
    18,749.15/28,123.73 = 7,509.60/x
  3. Step 3: Cross multiply
    18,749.15x = 28,123.73 × 7,509.60
  4. Step 4: Simplify right side
    18,749.15x = 211,197,911.27
  5. Step 5: Solve for x
    x = 211,197,911.27/18,749.15
  6. Step 6: Final answer
    x = 11,264.40

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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.