Home / 15,631.38-21,570.93-8,558.10

Finding the Fourth Proportional to 15,631.38, 21,570.93 and 8,558.10

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Solution

The fourth proportional to 15,631.38, 21,570.93 and 8,558.10 is: 11,809.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,631.38 : 21,570.93 = 8,558.10 : x
  2. Step 2: Convert to fraction form
    15,631.38/21,570.93 = 8,558.10/x
  3. Step 3: Cross multiply
    15,631.38x = 21,570.93 × 8,558.10
  4. Step 4: Simplify right side
    15,631.38x = 184,606,176.03
  5. Step 5: Solve for x
    x = 184,606,176.03/15,631.38
  6. Step 6: Final answer
    x = 11,809.97

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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.