Home / 28,289.40-42,435.44-9,315.24

Finding the Fourth Proportional to 28,289.40, 42,435.44 and 9,315.24

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Solution

The fourth proportional to 28,289.40, 42,435.44 and 9,315.24 is: 13,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,289.40 : 42,435.44 = 9,315.24 : x
  2. Step 2: Convert to fraction form
    28,289.40/42,435.44 = 9,315.24/x
  3. Step 3: Cross multiply
    28,289.40x = 42,435.44 × 9,315.24
  4. Step 4: Simplify right side
    28,289.40x = 395,296,308.11
  5. Step 5: Solve for x
    x = 395,296,308.11/28,289.40
  6. Step 6: Final answer
    x = 13,973.30

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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.