Home / 15,346.95-21,178.44-9,378.60

Finding the Fourth Proportional to 15,346.95, 21,178.44 and 9,378.60

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Solution

The fourth proportional to 15,346.95, 21,178.44 and 9,378.60 is: 12,942.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,346.95 : 21,178.44 = 9,378.60 : x
  2. Step 2: Convert to fraction form
    15,346.95/21,178.44 = 9,378.60/x
  3. Step 3: Cross multiply
    15,346.95x = 21,178.44 × 9,378.60
  4. Step 4: Simplify right side
    15,346.95x = 198,624,117.38
  5. Step 5: Solve for x
    x = 198,624,117.38/15,346.95
  6. Step 6: Final answer
    x = 12,942.25

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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.