Home / 28,001.64-42,011.46-8,280.36

Finding the Fourth Proportional to 28,001.64, 42,011.46 and 8,280.36

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Solution

The fourth proportional to 28,001.64, 42,011.46 and 8,280.36 is: 12,423.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,001.64 : 42,011.46 = 8,280.36 : x
  2. Step 2: Convert to fraction form
    28,001.64/42,011.46 = 8,280.36/x
  3. Step 3: Cross multiply
    28,001.64x = 42,011.46 × 8,280.36
  4. Step 4: Simplify right side
    28,001.64x = 347,870,012.93
  5. Step 5: Solve for x
    x = 347,870,012.93/28,001.64
  6. Step 6: Final answer
    x = 12,423.20

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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.