Home / 15,567.79-21,483.54-8,494.21

Finding the Fourth Proportional to 15,567.79, 21,483.54 and 8,494.21

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Solution

The fourth proportional to 15,567.79, 21,483.54 and 8,494.21 is: 11,722.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,567.79 : 21,483.54 = 8,494.21 : x
  2. Step 2: Convert to fraction form
    15,567.79/21,483.54 = 8,494.21/x
  3. Step 3: Cross multiply
    15,567.79x = 21,483.54 × 8,494.21
  4. Step 4: Simplify right side
    15,567.79x = 182,485,700.30
  5. Step 5: Solve for x
    x = 182,485,700.30/15,567.79
  6. Step 6: Final answer
    x = 11,722.00

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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.