Home / 13,748.04-18,987.78-9,290.22

Finding the Fourth Proportional to 13,748.04, 18,987.78 and 9,290.22

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Solution

The fourth proportional to 13,748.04, 18,987.78 and 9,290.22 is: 12,830.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,748.04 : 18,987.78 = 9,290.22 : x
  2. Step 2: Convert to fraction form
    13,748.04/18,987.78 = 9,290.22/x
  3. Step 3: Cross multiply
    13,748.04x = 18,987.78 × 9,290.22
  4. Step 4: Simplify right side
    13,748.04x = 176,400,653.51
  5. Step 5: Solve for x
    x = 176,400,653.51/13,748.04
  6. Step 6: Final answer
    x = 12,830.97

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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.