Home / 15,326.19-21,148.83-9,278.67

Finding the Fourth Proportional to 15,326.19, 21,148.83 and 9,278.67

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Solution

The fourth proportional to 15,326.19, 21,148.83 and 9,278.67 is: 12,803.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,326.19 : 21,148.83 = 9,278.67 : x
  2. Step 2: Convert to fraction form
    15,326.19/21,148.83 = 9,278.67/x
  3. Step 3: Cross multiply
    15,326.19x = 21,148.83 × 9,278.67
  4. Step 4: Simplify right side
    15,326.19x = 196,233,014.46
  5. Step 5: Solve for x
    x = 196,233,014.46/15,326.19
  6. Step 6: Final answer
    x = 12,803.77

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Double scale
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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.