Home / 15,228.92-21,021.72-9,925.04

Finding the Fourth Proportional to 15,228.92, 21,021.72 and 9,925.04

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Solution

The fourth proportional to 15,228.92, 21,021.72 and 9,925.04 is: 13,700.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228.92 : 21,021.72 = 9,925.04 : x
  2. Step 2: Convert to fraction form
    15,228.92/21,021.72 = 9,925.04/x
  3. Step 3: Cross multiply
    15,228.92x = 21,021.72 × 9,925.04
  4. Step 4: Simplify right side
    15,228.92x = 208,641,411.87
  5. Step 5: Solve for x
    x = 208,641,411.87/15,228.92
  6. Step 6: Final answer
    x = 13,700.34

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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.