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Finding the Fourth Proportional to 15,770.63, 21,762.48 and 9,051.53

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Solution

The fourth proportional to 15,770.63, 21,762.48 and 9,051.53 is: 12,490.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,770.63 : 21,762.48 = 9,051.53 : x
  2. Step 2: Convert to fraction form
    15,770.63/21,762.48 = 9,051.53/x
  3. Step 3: Cross multiply
    15,770.63x = 21,762.48 × 9,051.53
  4. Step 4: Simplify right side
    15,770.63x = 196,983,740.59
  5. Step 5: Solve for x
    x = 196,983,740.59/15,770.63
  6. Step 6: Final answer
    x = 12,490.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.