Home / 28,054.72-42,133.76-18,827.20

Finding the Fourth Proportional to 28,054.72, 42,133.76 and 18,827.20

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Solution

The fourth proportional to 28,054.72, 42,133.76 and 18,827.20 is: 28,275.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,054.72 : 42,133.76 = 18,827.20 : x
  2. Step 2: Convert to fraction form
    28,054.72/42,133.76 = 18,827.20/x
  3. Step 3: Cross multiply
    28,054.72x = 42,133.76 × 18,827.20
  4. Step 4: Simplify right side
    28,054.72x = 793,260,726.27
  5. Step 5: Solve for x
    x = 793,260,726.27/28,054.72
  6. Step 6: Final answer
    x = 28,275.48

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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.