Home / 14,000.78-21,005.63-4,140.11

Finding the Fourth Proportional to 14,000.78, 21,005.63 and 4,140.11

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Solution

The fourth proportional to 14,000.78, 21,005.63 and 4,140.11 is: 6,211.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,000.78 : 21,005.63 = 4,140.11 : x
  2. Step 2: Convert to fraction form
    14,000.78/21,005.63 = 4,140.11/x
  3. Step 3: Cross multiply
    14,000.78x = 21,005.63 × 4,140.11
  4. Step 4: Simplify right side
    14,000.78x = 86,965,598.12
  5. Step 5: Solve for x
    x = 86,965,598.12/14,000.78
  6. Step 6: Final answer
    x = 6,211.48

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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.