Home / 15,557.32-21,465.30-9,975.88

Finding the Fourth Proportional to 15,557.32, 21,465.30 and 9,975.88

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Solution

The fourth proportional to 15,557.32, 21,465.30 and 9,975.88 is: 13,764.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,557.32 : 21,465.30 = 9,975.88 : x
  2. Step 2: Convert to fraction form
    15,557.32/21,465.30 = 9,975.88/x
  3. Step 3: Cross multiply
    15,557.32x = 21,465.30 × 9,975.88
  4. Step 4: Simplify right side
    15,557.32x = 214,135,256.96
  5. Step 5: Solve for x
    x = 214,135,256.96/15,557.32
  6. Step 6: Final answer
    x = 13,764.28

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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.