Home / 11,430.57-15,775.64-6,395.07

Finding the Fourth Proportional to 11,430.57, 15,775.64 and 6,395.07

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Solution

The fourth proportional to 11,430.57, 15,775.64 and 6,395.07 is: 8,826.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,430.57 : 15,775.64 = 6,395.07 : x
  2. Step 2: Convert to fraction form
    11,430.57/15,775.64 = 6,395.07/x
  3. Step 3: Cross multiply
    11,430.57x = 15,775.64 × 6,395.07
  4. Step 4: Simplify right side
    11,430.57x = 100,886,322.09
  5. Step 5: Solve for x
    x = 100,886,322.09/11,430.57
  6. Step 6: Final answer
    x = 8,826.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.