Home / 10,455.15-14,390.55-9,458.31

Finding the Fourth Proportional to 10,455.15, 14,390.55 and 9,458.31

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Solution

The fourth proportional to 10,455.15, 14,390.55 and 9,458.31 is: 13,018.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,455.15 : 14,390.55 = 9,458.31 : x
  2. Step 2: Convert to fraction form
    10,455.15/14,390.55 = 9,458.31/x
  3. Step 3: Cross multiply
    10,455.15x = 14,390.55 × 9,458.31
  4. Step 4: Simplify right side
    10,455.15x = 136,110,282.97
  5. Step 5: Solve for x
    x = 136,110,282.97/10,455.15
  6. Step 6: Final answer
    x = 13,018.49

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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.