Home / 28,130.19-38,819.10-15,383.01

Finding the Fourth Proportional to 28,130.19, 38,819.10 and 15,383.01

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Solution

The fourth proportional to 28,130.19, 38,819.10 and 15,383.01 is: 21,228.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.19 : 38,819.10 = 15,383.01 : x
  2. Step 2: Convert to fraction form
    28,130.19/38,819.10 = 15,383.01/x
  3. Step 3: Cross multiply
    28,130.19x = 38,819.10 × 15,383.01
  4. Step 4: Simplify right side
    28,130.19x = 597,154,720.22
  5. Step 5: Solve for x
    x = 597,154,720.22/28,130.19
  6. Step 6: Final answer
    x = 21,228.25

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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.