Home / 28,309.04-42,464.51-12,726.72

Finding the Fourth Proportional to 28,309.04, 42,464.51 and 12,726.72

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Solution

The fourth proportional to 28,309.04, 42,464.51 and 12,726.72 is: 19,090.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,309.04 : 42,464.51 = 12,726.72 : x
  2. Step 2: Convert to fraction form
    28,309.04/42,464.51 = 12,726.72/x
  3. Step 3: Cross multiply
    28,309.04x = 42,464.51 × 12,726.72
  4. Step 4: Simplify right side
    28,309.04x = 540,433,928.71
  5. Step 5: Solve for x
    x = 540,433,928.71/28,309.04
  6. Step 6: Final answer
    x = 19,090.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.