Home / 14,289.35-19,718.85-7,915.68

Finding the Fourth Proportional to 14,289.35, 19,718.85 and 7,915.68

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Solution

The fourth proportional to 14,289.35, 19,718.85 and 7,915.68 is: 10,923.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,289.35 : 19,718.85 = 7,915.68 : x
  2. Step 2: Convert to fraction form
    14,289.35/19,718.85 = 7,915.68/x
  3. Step 3: Cross multiply
    14,289.35x = 19,718.85 × 7,915.68
  4. Step 4: Simplify right side
    14,289.35x = 156,088,066.99
  5. Step 5: Solve for x
    x = 156,088,066.99/14,289.35
  6. Step 6: Final answer
    x = 10,923.38

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Half scale
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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.