Home / 27,681.60-38,200.80-15,106.56

Finding the Fourth Proportional to 27,681.60, 38,200.80 and 15,106.56

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Solution

The fourth proportional to 27,681.60, 38,200.80 and 15,106.56 is: 20,847.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,681.60 : 38,200.80 = 15,106.56 : x
  2. Step 2: Convert to fraction form
    27,681.60/38,200.80 = 15,106.56/x
  3. Step 3: Cross multiply
    27,681.60x = 38,200.80 × 15,106.56
  4. Step 4: Simplify right side
    27,681.60x = 577,082,677.25
  5. Step 5: Solve for x
    x = 577,082,677.25/27,681.60
  6. Step 6: Final answer
    x = 20,847.16

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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.