Home / 28,012.55-38,656.81-15,265.81

Finding the Fourth Proportional to 28,012.55, 38,656.81 and 15,265.81

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Solution

The fourth proportional to 28,012.55, 38,656.81 and 15,265.81 is: 21,066.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.55 : 38,656.81 = 15,265.81 : x
  2. Step 2: Convert to fraction form
    28,012.55/38,656.81 = 15,265.81/x
  3. Step 3: Cross multiply
    28,012.55x = 38,656.81 × 15,265.81
  4. Step 4: Simplify right side
    28,012.55x = 590,127,584.07
  5. Step 5: Solve for x
    x = 590,127,584.07/28,012.55
  6. Step 6: Final answer
    x = 21,066.55

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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.