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Finding the Fourth Proportional to 14,430.88, 21,645 and 4,570

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Solution

The fourth proportional to 14,430.88, 21,645 and 4,570 is: 6,854.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,430.88 : 21,645 = 4,570 : x
  2. Step 2: Convert to fraction form
    14,430.88/21,645 = 4,570/x
  3. Step 3: Cross multiply
    14,430.88x = 21,645 × 4,570
  4. Step 4: Simplify right side
    14,430.88x = 98,917,650
  5. Step 5: Solve for x
    x = 98,917,650/14,430.88
  6. Step 6: Final answer
    x = 6,854.58

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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.