Home / 15,407.92-21,261.72-8,695.18

Finding the Fourth Proportional to 15,407.92, 21,261.72 and 8,695.18

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Solution

The fourth proportional to 15,407.92, 21,261.72 and 8,695.18 is: 11,998.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,407.92 : 21,261.72 = 8,695.18 : x
  2. Step 2: Convert to fraction form
    15,407.92/21,261.72 = 8,695.18/x
  3. Step 3: Cross multiply
    15,407.92x = 21,261.72 × 8,695.18
  4. Step 4: Simplify right side
    15,407.92x = 184,874,482.51
  5. Step 5: Solve for x
    x = 184,874,482.51/15,407.92
  6. Step 6: Final answer
    x = 11,998.67

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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.