Home / 28,005.35-38,647.53-15,430.10

Finding the Fourth Proportional to 28,005.35, 38,647.53 and 15,430.10

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Solution

The fourth proportional to 28,005.35, 38,647.53 and 15,430.10 is: 21,293.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.35 : 38,647.53 = 15,430.10 : x
  2. Step 2: Convert to fraction form
    28,005.35/38,647.53 = 15,430.10/x
  3. Step 3: Cross multiply
    28,005.35x = 38,647.53 × 15,430.10
  4. Step 4: Simplify right side
    28,005.35x = 596,335,059.42
  5. Step 5: Solve for x
    x = 596,335,059.42/28,005.35
  6. Step 6: Final answer
    x = 21,293.62

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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.