Home / 28,460.81-39,276.54-15,713.96

Finding the Fourth Proportional to 28,460.81, 39,276.54 and 15,713.96

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Solution

The fourth proportional to 28,460.81, 39,276.54 and 15,713.96 is: 21,685.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,460.81 : 39,276.54 = 15,713.96 : x
  2. Step 2: Convert to fraction form
    28,460.81/39,276.54 = 15,713.96/x
  3. Step 3: Cross multiply
    28,460.81x = 39,276.54 × 15,713.96
  4. Step 4: Simplify right side
    28,460.81x = 617,189,782.12
  5. Step 5: Solve for x
    x = 617,189,782.12/28,460.81
  6. Step 6: Final answer
    x = 21,685.60

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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.