Home / 28,316.04-39,018.54-21,903.69

Finding the Fourth Proportional to 28,316.04, 39,018.54 and 21,903.69

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Solution

The fourth proportional to 28,316.04, 39,018.54 and 21,903.69 is: 30,182.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.04 : 39,018.54 = 21,903.69 : x
  2. Step 2: Convert to fraction form
    28,316.04/39,018.54 = 21,903.69/x
  3. Step 3: Cross multiply
    28,316.04x = 39,018.54 × 21,903.69
  4. Step 4: Simplify right side
    28,316.04x = 854,650,004.41
  5. Step 5: Solve for x
    x = 854,650,004.41/28,316.04
  6. Step 6: Final answer
    x = 30,182.54

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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.