Home / 28,925.80-43,380.60-9,210.40

Finding the Fourth Proportional to 28,925.80, 43,380.60 and 9,210.40

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Solution

The fourth proportional to 28,925.80, 43,380.60 and 9,210.40 is: 13,813.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,925.80 : 43,380.60 = 9,210.40 : x
  2. Step 2: Convert to fraction form
    28,925.80/43,380.60 = 9,210.40/x
  3. Step 3: Cross multiply
    28,925.80x = 43,380.60 × 9,210.40
  4. Step 4: Simplify right side
    28,925.80x = 399,552,678.24
  5. Step 5: Solve for x
    x = 399,552,678.24/28,925.80
  6. Step 6: Final answer
    x = 13,813.02

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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.