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Finding the Fourth Proportional to 14,280.88, 21,421.40 and 5,046.88

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Solution

The fourth proportional to 14,280.88, 21,421.40 and 5,046.88 is: 7,570.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,280.88 : 21,421.40 = 5,046.88 : x
  2. Step 2: Convert to fraction form
    14,280.88/21,421.40 = 5,046.88/x
  3. Step 3: Cross multiply
    14,280.88x = 21,421.40 × 5,046.88
  4. Step 4: Simplify right side
    14,280.88x = 108,111,235.23
  5. Step 5: Solve for x
    x = 108,111,235.23/14,280.88
  6. Step 6: Final answer
    x = 7,570.35

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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.