Home / 28,325.83-39,088.74-15,578.92

Finding the Fourth Proportional to 28,325.83, 39,088.74 and 15,578.92

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Solution

The fourth proportional to 28,325.83, 39,088.74 and 15,578.92 is: 21,498.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,325.83 : 39,088.74 = 15,578.92 : x
  2. Step 2: Convert to fraction form
    28,325.83/39,088.74 = 15,578.92/x
  3. Step 3: Cross multiply
    28,325.83x = 39,088.74 × 15,578.92
  4. Step 4: Simplify right side
    28,325.83x = 608,960,353.36
  5. Step 5: Solve for x
    x = 608,960,353.36/28,325.83
  6. Step 6: Final answer
    x = 21,498.42

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Half scale
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Double scale
Find fourth proportional to 28,326.83, 39,090.12 and 15,579.92
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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.