Home / 28,554.78-42,807.54-13,774.08

Finding the Fourth Proportional to 28,554.78, 42,807.54 and 13,774.08

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Solution

The fourth proportional to 28,554.78, 42,807.54 and 13,774.08 is: 20,649.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,554.78 : 42,807.54 = 13,774.08 : x
  2. Step 2: Convert to fraction form
    28,554.78/42,807.54 = 13,774.08/x
  3. Step 3: Cross multiply
    28,554.78x = 42,807.54 × 13,774.08
  4. Step 4: Simplify right side
    28,554.78x = 589,634,480.56
  5. Step 5: Solve for x
    x = 589,634,480.56/28,554.78
  6. Step 6: Final answer
    x = 20,649.24

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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.