Home / 15,300.12-21,104.64-9,011.28

Finding the Fourth Proportional to 15,300.12, 21,104.64 and 9,011.28

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Solution

The fourth proportional to 15,300.12, 21,104.64 and 9,011.28 is: 12,429.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,300.12 : 21,104.64 = 9,011.28 : x
  2. Step 2: Convert to fraction form
    15,300.12/21,104.64 = 9,011.28/x
  3. Step 3: Cross multiply
    15,300.12x = 21,104.64 × 9,011.28
  4. Step 4: Simplify right side
    15,300.12x = 190,179,820.34
  5. Step 5: Solve for x
    x = 190,179,820.34/15,300.12
  6. Step 6: Final answer
    x = 12,429.96

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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.