Home / 13,920.69-19,210.55-7,633.20

Finding the Fourth Proportional to 13,920.69, 19,210.55 and 7,633.20

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Solution

The fourth proportional to 13,920.69, 19,210.55 and 7,633.20 is: 10,533.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.69 : 19,210.55 = 7,633.20 : x
  2. Step 2: Convert to fraction form
    13,920.69/19,210.55 = 7,633.20/x
  3. Step 3: Cross multiply
    13,920.69x = 19,210.55 × 7,633.20
  4. Step 4: Simplify right side
    13,920.69x = 146,637,922.23
  5. Step 5: Solve for x
    x = 146,637,922.23/13,920.69
  6. Step 6: Final answer
    x = 10,533.81

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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.