Home / 20,283.04-28,000.72-12,740.32

Finding the Fourth Proportional to 20,283.04, 28,000.72 and 12,740.32

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Solution

The fourth proportional to 20,283.04, 28,000.72 and 12,740.32 is: 17,588.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,283.04 : 28,000.72 = 12,740.32 : x
  2. Step 2: Convert to fraction form
    20,283.04/28,000.72 = 12,740.32/x
  3. Step 3: Cross multiply
    20,283.04x = 28,000.72 × 12,740.32
  4. Step 4: Simplify right side
    20,283.04x = 356,738,133.03
  5. Step 5: Solve for x
    x = 356,738,133.03/20,283.04
  6. Step 6: Final answer
    x = 17,588.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.