Home / 19,298.20-28,898.70-18,423.40

Finding the Fourth Proportional to 19,298.20, 28,898.70 and 18,423.40

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Solution

The fourth proportional to 19,298.20, 28,898.70 and 18,423.40 is: 27,588.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,298.20 : 28,898.70 = 18,423.40 : x
  2. Step 2: Convert to fraction form
    19,298.20/28,898.70 = 18,423.40/x
  3. Step 3: Cross multiply
    19,298.20x = 28,898.70 × 18,423.40
  4. Step 4: Simplify right side
    19,298.20x = 532,412,309.58
  5. Step 5: Solve for x
    x = 532,412,309.58/19,298.20
  6. Step 6: Final answer
    x = 27,588.70

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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.