Home / 14,266.36-19,688.48-7,978.76

Finding the Fourth Proportional to 14,266.36, 19,688.48 and 7,978.76

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Solution

The fourth proportional to 14,266.36, 19,688.48 and 7,978.76 is: 11,011.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,266.36 : 19,688.48 = 7,978.76 : x
  2. Step 2: Convert to fraction form
    14,266.36/19,688.48 = 7,978.76/x
  3. Step 3: Cross multiply
    14,266.36x = 19,688.48 × 7,978.76
  4. Step 4: Simplify right side
    14,266.36x = 157,089,656.68
  5. Step 5: Solve for x
    x = 157,089,656.68/14,266.36
  6. Step 6: Final answer
    x = 11,011.19

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Half scale
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Double scale
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Similar ratio
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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.