Home / 28,426.98-39,228.73-15,681.32

Finding the Fourth Proportional to 28,426.98, 39,228.73 and 15,681.32

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Solution

The fourth proportional to 28,426.98, 39,228.73 and 15,681.32 is: 21,639.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,426.98 : 39,228.73 = 15,681.32 : x
  2. Step 2: Convert to fraction form
    28,426.98/39,228.73 = 15,681.32/x
  3. Step 3: Cross multiply
    28,426.98x = 39,228.73 × 15,681.32
  4. Step 4: Simplify right side
    28,426.98x = 615,158,268.32
  5. Step 5: Solve for x
    x = 615,158,268.32/28,426.98
  6. Step 6: Final answer
    x = 21,639.94

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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.