Home / 28,021.70-38,669.91-15,446.45

Finding the Fourth Proportional to 28,021.70, 38,669.91 and 15,446.45

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Solution

The fourth proportional to 28,021.70, 38,669.91 and 15,446.45 is: 21,316.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,021.70 : 38,669.91 = 15,446.45 : x
  2. Step 2: Convert to fraction form
    28,021.70/38,669.91 = 15,446.45/x
  3. Step 3: Cross multiply
    28,021.70x = 38,669.91 × 15,446.45
  4. Step 4: Simplify right side
    28,021.70x = 597,312,831.32
  5. Step 5: Solve for x
    x = 597,312,831.32/28,021.70
  6. Step 6: Final answer
    x = 21,316.08

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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.