Home / 19,477.12-26,878-10,979.08

Finding the Fourth Proportional to 19,477.12, 26,878 and 10,979.08

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Solution

The fourth proportional to 19,477.12, 26,878 and 10,979.08 is: 15,150.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,477.12 : 26,878 = 10,979.08 : x
  2. Step 2: Convert to fraction form
    19,477.12/26,878 = 10,979.08/x
  3. Step 3: Cross multiply
    19,477.12x = 26,878 × 10,979.08
  4. Step 4: Simplify right side
    19,477.12x = 295,095,712.24
  5. Step 5: Solve for x
    x = 295,095,712.24/19,477.12
  6. Step 6: Final answer
    x = 15,150.89

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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.