Home / 15,628.42-21,567.18-9,340.84

Finding the Fourth Proportional to 15,628.42, 21,567.18 and 9,340.84

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Solution

The fourth proportional to 15,628.42, 21,567.18 and 9,340.84 is: 12,890.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628.42 : 21,567.18 = 9,340.84 : x
  2. Step 2: Convert to fraction form
    15,628.42/21,567.18 = 9,340.84/x
  3. Step 3: Cross multiply
    15,628.42x = 21,567.18 × 9,340.84
  4. Step 4: Simplify right side
    15,628.42x = 201,455,577.63
  5. Step 5: Solve for x
    x = 201,455,577.63/15,628.42
  6. Step 6: Final answer
    x = 12,890.34

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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.