Home / 28,485.36-42,720.84-8,490.24

Finding the Fourth Proportional to 28,485.36, 42,720.84 and 8,490.24

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Solution

The fourth proportional to 28,485.36, 42,720.84 and 8,490.24 is: 12,733.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,485.36 : 42,720.84 = 8,490.24 : x
  2. Step 2: Convert to fraction form
    28,485.36/42,720.84 = 8,490.24/x
  3. Step 3: Cross multiply
    28,485.36x = 42,720.84 × 8,490.24
  4. Step 4: Simplify right side
    28,485.36x = 362,710,184.60
  5. Step 5: Solve for x
    x = 362,710,184.60/28,485.36
  6. Step 6: Final answer
    x = 12,733.21

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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.