Home / 14,000.45-21,000.95-4,139.72

Finding the Fourth Proportional to 14,000.45, 21,000.95 and 4,139.72

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Solution

The fourth proportional to 14,000.45, 21,000.95 and 4,139.72 is: 6,209.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,000.45 : 21,000.95 = 4,139.72 : x
  2. Step 2: Convert to fraction form
    14,000.45/21,000.95 = 4,139.72/x
  3. Step 3: Cross multiply
    14,000.45x = 21,000.95 × 4,139.72
  4. Step 4: Simplify right side
    14,000.45x = 86,937,927.03
  5. Step 5: Solve for x
    x = 86,937,927.03/14,000.45
  6. Step 6: Final answer
    x = 6,209.65

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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.