Home / 13,445.22-18,555.54-7,478.04

Finding the Fourth Proportional to 13,445.22, 18,555.54 and 7,478.04

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Solution

The fourth proportional to 13,445.22, 18,555.54 and 7,478.04 is: 10,320.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.22 : 18,555.54 = 7,478.04 : x
  2. Step 2: Convert to fraction form
    13,445.22/18,555.54 = 7,478.04/x
  3. Step 3: Cross multiply
    13,445.22x = 18,555.54 × 7,478.04
  4. Step 4: Simplify right side
    13,445.22x = 138,759,070.34
  5. Step 5: Solve for x
    x = 138,759,070.34/13,445.22
  6. Step 6: Final answer
    x = 10,320.33

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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.