Home / 28,458.81-42,703.74-19,106.64

Finding the Fourth Proportional to 28,458.81, 42,703.74 and 19,106.64

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Solution

The fourth proportional to 28,458.81, 42,703.74 and 19,106.64 is: 28,670.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,458.81 : 42,703.74 = 19,106.64 : x
  2. Step 2: Convert to fraction form
    28,458.81/42,703.74 = 19,106.64/x
  3. Step 3: Cross multiply
    28,458.81x = 42,703.74 × 19,106.64
  4. Step 4: Simplify right side
    28,458.81x = 815,924,986.83
  5. Step 5: Solve for x
    x = 815,924,986.83/28,458.81
  6. Step 6: Final answer
    x = 28,670.38

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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.