Home / 15,590.82-21,501.06-12,188.28

Finding the Fourth Proportional to 15,590.82, 21,501.06 and 12,188.28

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Solution

The fourth proportional to 15,590.82, 21,501.06 and 12,188.28 is: 16,808.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,590.82 : 21,501.06 = 12,188.28 : x
  2. Step 2: Convert to fraction form
    15,590.82/21,501.06 = 12,188.28/x
  3. Step 3: Cross multiply
    15,590.82x = 21,501.06 × 12,188.28
  4. Step 4: Simplify right side
    15,590.82x = 262,060,939.58
  5. Step 5: Solve for x
    x = 262,060,939.58/15,590.82
  6. Step 6: Final answer
    x = 16,808.67

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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.