Home / 11,455.93-15,810.14-6,420.07

Finding the Fourth Proportional to 11,455.93, 15,810.14 and 6,420.07

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Solution

The fourth proportional to 11,455.93, 15,810.14 and 6,420.07 is: 8,860.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.93 : 15,810.14 = 6,420.07 : x
  2. Step 2: Convert to fraction form
    11,455.93/15,810.14 = 6,420.07/x
  3. Step 3: Cross multiply
    11,455.93x = 15,810.14 × 6,420.07
  4. Step 4: Simplify right side
    11,455.93x = 101,502,205.51
  5. Step 5: Solve for x
    x = 101,502,205.51/11,455.93
  6. Step 6: Final answer
    x = 8,860.23

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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.