Home / 26,618.90-39,928.36-12,574.32

Finding the Fourth Proportional to 26,618.90, 39,928.36 and 12,574.32

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Solution

The fourth proportional to 26,618.90, 39,928.36 and 12,574.32 is: 18,861.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,618.90 : 39,928.36 = 12,574.32 : x
  2. Step 2: Convert to fraction form
    26,618.90/39,928.36 = 12,574.32/x
  3. Step 3: Cross multiply
    26,618.90x = 39,928.36 × 12,574.32
  4. Step 4: Simplify right side
    26,618.90x = 502,071,975.72
  5. Step 5: Solve for x
    x = 502,071,975.72/26,618.90
  6. Step 6: Final answer
    x = 18,861.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.