Home / 13,752.47-18,973.27-8,087.51

Finding the Fourth Proportional to 13,752.47, 18,973.27 and 8,087.51

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Solution

The fourth proportional to 13,752.47, 18,973.27 and 8,087.51 is: 11,157.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.47 : 18,973.27 = 8,087.51 : x
  2. Step 2: Convert to fraction form
    13,752.47/18,973.27 = 8,087.51/x
  3. Step 3: Cross multiply
    13,752.47x = 18,973.27 × 8,087.51
  4. Step 4: Simplify right side
    13,752.47x = 153,446,568.40
  5. Step 5: Solve for x
    x = 153,446,568.40/13,752.47
  6. Step 6: Final answer
    x = 11,157.74

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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.