Home / 19,111.52-28,678.20-7,423.22

Finding the Fourth Proportional to 19,111.52, 28,678.20 and 7,423.22

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Solution

The fourth proportional to 19,111.52, 28,678.20 and 7,423.22 is: 11,139.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,111.52 : 28,678.20 = 7,423.22 : x
  2. Step 2: Convert to fraction form
    19,111.52/28,678.20 = 7,423.22/x
  3. Step 3: Cross multiply
    19,111.52x = 28,678.20 × 7,423.22
  4. Step 4: Simplify right side
    19,111.52x = 212,884,587.80
  5. Step 5: Solve for x
    x = 212,884,587.80/19,111.52
  6. Step 6: Final answer
    x = 11,139.07

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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.