Home / 13,445.88-18,547.61-11,164.31

Finding the Fourth Proportional to 13,445.88, 18,547.61 and 11,164.31

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Solution

The fourth proportional to 13,445.88, 18,547.61 and 11,164.31 is: 15,400.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.88 : 18,547.61 = 11,164.31 : x
  2. Step 2: Convert to fraction form
    13,445.88/18,547.61 = 11,164.31/x
  3. Step 3: Cross multiply
    13,445.88x = 18,547.61 × 11,164.31
  4. Step 4: Simplify right side
    13,445.88x = 207,071,119.24
  5. Step 5: Solve for x
    x = 207,071,119.24/13,445.88
  6. Step 6: Final answer
    x = 15,400.34

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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.