Home / 13,920.58-19,210.65-7,632.88

Finding the Fourth Proportional to 13,920.58, 19,210.65 and 7,632.88

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Solution

The fourth proportional to 13,920.58, 19,210.65 and 7,632.88 is: 10,533.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.58 : 19,210.65 = 7,632.88 : x
  2. Step 2: Convert to fraction form
    13,920.58/19,210.65 = 7,632.88/x
  3. Step 3: Cross multiply
    13,920.58x = 19,210.65 × 7,632.88
  4. Step 4: Simplify right side
    13,920.58x = 146,632,586.17
  5. Step 5: Solve for x
    x = 146,632,586.17/13,920.58
  6. Step 6: Final answer
    x = 10,533.51

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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.