Home / 15,822.65-21,835.69-8,749.32

Finding the Fourth Proportional to 15,822.65, 21,835.69 and 8,749.32

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Solution

The fourth proportional to 15,822.65, 21,835.69 and 8,749.32 is: 12,074.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,822.65 : 21,835.69 = 8,749.32 : x
  2. Step 2: Convert to fraction form
    15,822.65/21,835.69 = 8,749.32/x
  3. Step 3: Cross multiply
    15,822.65x = 21,835.69 × 8,749.32
  4. Step 4: Simplify right side
    15,822.65x = 191,047,439.23
  5. Step 5: Solve for x
    x = 191,047,439.23/15,822.65
  6. Step 6: Final answer
    x = 12,074.30

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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.