Home / 11,430.36-15,772.86-7,238.52

Finding the Fourth Proportional to 11,430.36, 15,772.86 and 7,238.52

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Solution

The fourth proportional to 11,430.36, 15,772.86 and 7,238.52 is: 9,988.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,430.36 : 15,772.86 = 7,238.52 : x
  2. Step 2: Convert to fraction form
    11,430.36/15,772.86 = 7,238.52/x
  3. Step 3: Cross multiply
    11,430.36x = 15,772.86 × 7,238.52
  4. Step 4: Simplify right side
    11,430.36x = 114,172,162.57
  5. Step 5: Solve for x
    x = 114,172,162.57/11,430.36
  6. Step 6: Final answer
    x = 9,988.50

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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.