Home / 28,130.09-38,819.05-15,554.84

Finding the Fourth Proportional to 28,130.09, 38,819.05 and 15,554.84

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Solution

The fourth proportional to 28,130.09, 38,819.05 and 15,554.84 is: 21,465.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.09 : 38,819.05 = 15,554.84 : x
  2. Step 2: Convert to fraction form
    28,130.09/38,819.05 = 15,554.84/x
  3. Step 3: Cross multiply
    28,130.09x = 38,819.05 × 15,554.84
  4. Step 4: Simplify right side
    28,130.09x = 603,823,878.72
  5. Step 5: Solve for x
    x = 603,823,878.72/28,130.09
  6. Step 6: Final answer
    x = 21,465.41

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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.