Home / 28,588.78-42,891.99-12,807.10

Finding the Fourth Proportional to 28,588.78, 42,891.99 and 12,807.10

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Solution

The fourth proportional to 28,588.78, 42,891.99 and 12,807.10 is: 19,214.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,588.78 : 42,891.99 = 12,807.10 : x
  2. Step 2: Convert to fraction form
    28,588.78/42,891.99 = 12,807.10/x
  3. Step 3: Cross multiply
    28,588.78x = 42,891.99 × 12,807.10
  4. Step 4: Simplify right side
    28,588.78x = 549,322,005.13
  5. Step 5: Solve for x
    x = 549,322,005.13/28,588.78
  6. Step 6: Final answer
    x = 19,214.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.