Home / 19,129.89-28,502.55-18,055.59

Finding the Fourth Proportional to 19,129.89, 28,502.55 and 18,055.59

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Solution

The fourth proportional to 19,129.89, 28,502.55 and 18,055.59 is: 26,901.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,129.89 : 28,502.55 = 18,055.59 : x
  2. Step 2: Convert to fraction form
    19,129.89/28,502.55 = 18,055.59/x
  3. Step 3: Cross multiply
    19,129.89x = 28,502.55 × 18,055.59
  4. Step 4: Simplify right side
    19,129.89x = 514,630,356.75
  5. Step 5: Solve for x
    x = 514,630,356.75/19,129.89
  6. Step 6: Final answer
    x = 26,901.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.