Home / 28,130.32-38,802.88-18,570.28

Finding the Fourth Proportional to 28,130.32, 38,802.88 and 18,570.28

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Solution

The fourth proportional to 28,130.32, 38,802.88 and 18,570.28 is: 25,615.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,130.32 : 38,802.88 = 18,570.28 : x
  2. Step 2: Convert to fraction form
    28,130.32/38,802.88 = 18,570.28/x
  3. Step 3: Cross multiply
    28,130.32x = 38,802.88 × 18,570.28
  4. Step 4: Simplify right side
    28,130.32x = 720,580,346.41
  5. Step 5: Solve for x
    x = 720,580,346.41/28,130.32
  6. Step 6: Final answer
    x = 25,615.79

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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.