Home / 28,005.32-38,647.46-15,430.08

Finding the Fourth Proportional to 28,005.32, 38,647.46 and 15,430.08

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Solution

The fourth proportional to 28,005.32, 38,647.46 and 15,430.08 is: 21,293.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.32 : 38,647.46 = 15,430.08 : x
  2. Step 2: Convert to fraction form
    28,005.32/38,647.46 = 15,430.08/x
  3. Step 3: Cross multiply
    28,005.32x = 38,647.46 × 15,430.08
  4. Step 4: Simplify right side
    28,005.32x = 596,333,399.60
  5. Step 5: Solve for x
    x = 596,333,399.60/28,005.32
  6. Step 6: Final answer
    x = 21,293.58

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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.