Home / 15,319.41-21,142.74-9,349.80

Finding the Fourth Proportional to 15,319.41, 21,142.74 and 9,349.80

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Solution

The fourth proportional to 15,319.41, 21,142.74 and 9,349.80 is: 12,903.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,319.41 : 21,142.74 = 9,349.80 : x
  2. Step 2: Convert to fraction form
    15,319.41/21,142.74 = 9,349.80/x
  3. Step 3: Cross multiply
    15,319.41x = 21,142.74 × 9,349.80
  4. Step 4: Simplify right side
    15,319.41x = 197,680,390.45
  5. Step 5: Solve for x
    x = 197,680,390.45/15,319.41
  6. Step 6: Final answer
    x = 12,903.92

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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.