Home / 14,280.30-21,420.45-13,211.10

Finding the Fourth Proportional to 14,280.30, 21,420.45 and 13,211.10

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Solution

The fourth proportional to 14,280.30, 21,420.45 and 13,211.10 is: 19,816.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.30 : 21,420.45 = 13,211.10 : x
  2. Step 2: Convert to fraction form
    14,280.30/21,420.45 = 13,211.10/x
  3. Step 3: Cross multiply
    14,280.30x = 21,420.45 × 13,211.10
  4. Step 4: Simplify right side
    14,280.30x = 282,987,707.00
  5. Step 5: Solve for x
    x = 282,987,707.00/14,280.30
  6. Step 6: Final answer
    x = 19,816.65

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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.