Home / 15,699.08-23,656.64-12,986.80

Finding the Fourth Proportional to 15,699.08, 23,656.64 and 12,986.80

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Solution

The fourth proportional to 15,699.08, 23,656.64 and 12,986.80 is: 19,569.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.08 : 23,656.64 = 12,986.80 : x
  2. Step 2: Convert to fraction form
    15,699.08/23,656.64 = 12,986.80/x
  3. Step 3: Cross multiply
    15,699.08x = 23,656.64 × 12,986.80
  4. Step 4: Simplify right side
    15,699.08x = 307,224,001.33
  5. Step 5: Solve for x
    x = 307,224,001.33/15,699.08
  6. Step 6: Final answer
    x = 19,569.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.