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Finding the Fourth Proportional to 15,347.58, 21,191.58 and 11,984.56

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Solution

The fourth proportional to 15,347.58, 21,191.58 and 11,984.56 is: 16,548.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.58 : 21,191.58 = 11,984.56 : x
  2. Step 2: Convert to fraction form
    15,347.58/21,191.58 = 11,984.56/x
  3. Step 3: Cross multiply
    15,347.58x = 21,191.58 × 11,984.56
  4. Step 4: Simplify right side
    15,347.58x = 253,971,762.00
  5. Step 5: Solve for x
    x = 253,971,762.00/15,347.58
  6. Step 6: Final answer
    x = 16,548.00

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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.