Home / 13,920.08-19,210.68-7,632.86

Finding the Fourth Proportional to 13,920.08, 19,210.68 and 7,632.86

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Solution

The fourth proportional to 13,920.08, 19,210.68 and 7,632.86 is: 10,533.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.08 : 19,210.68 = 7,632.86 : x
  2. Step 2: Convert to fraction form
    13,920.08/19,210.68 = 7,632.86/x
  3. Step 3: Cross multiply
    13,920.08x = 19,210.68 × 7,632.86
  4. Step 4: Simplify right side
    13,920.08x = 146,632,430.94
  5. Step 5: Solve for x
    x = 146,632,430.94/13,920.08
  6. Step 6: Final answer
    x = 10,533.88

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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.