Home / 13,925.92-19,218.99-7,639.51

Finding the Fourth Proportional to 13,925.92, 19,218.99 and 7,639.51

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Solution

The fourth proportional to 13,925.92, 19,218.99 and 7,639.51 is: 10,543.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.92 : 19,218.99 = 7,639.51 : x
  2. Step 2: Convert to fraction form
    13,925.92/19,218.99 = 7,639.51/x
  3. Step 3: Cross multiply
    13,925.92x = 19,218.99 × 7,639.51
  4. Step 4: Simplify right side
    13,925.92x = 146,823,628.10
  5. Step 5: Solve for x
    x = 146,823,628.10/13,925.92
  6. Step 6: Final answer
    x = 10,543.19

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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.