Home / 20,967.30-28,931.58-12,013.08

Finding the Fourth Proportional to 20,967.30, 28,931.58 and 12,013.08

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Solution

The fourth proportional to 20,967.30, 28,931.58 and 12,013.08 is: 16,576.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.30 : 28,931.58 = 12,013.08 : x
  2. Step 2: Convert to fraction form
    20,967.30/28,931.58 = 12,013.08/x
  3. Step 3: Cross multiply
    20,967.30x = 28,931.58 × 12,013.08
  4. Step 4: Simplify right side
    20,967.30x = 347,557,385.07
  5. Step 5: Solve for x
    x = 347,557,385.07/20,967.30
  6. Step 6: Final answer
    x = 16,576.16

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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.