Home / 15,621.10-21,556.93-8,547.45

Finding the Fourth Proportional to 15,621.10, 21,556.93 and 8,547.45

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Solution

The fourth proportional to 15,621.10, 21,556.93 and 8,547.45 is: 11,795.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.10 : 21,556.93 = 8,547.45 : x
  2. Step 2: Convert to fraction form
    15,621.10/21,556.93 = 8,547.45/x
  3. Step 3: Cross multiply
    15,621.10x = 21,556.93 × 8,547.45
  4. Step 4: Simplify right side
    15,621.10x = 184,256,781.33
  5. Step 5: Solve for x
    x = 184,256,781.33/15,621.10
  6. Step 6: Final answer
    x = 11,795.38

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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.