Home / 18,423.19-25,428.10-11,707.50

Finding the Fourth Proportional to 18,423.19, 25,428.10 and 11,707.50

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Solution

The fourth proportional to 18,423.19, 25,428.10 and 11,707.50 is: 16,158.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,423.19 : 25,428.10 = 11,707.50 : x
  2. Step 2: Convert to fraction form
    18,423.19/25,428.10 = 11,707.50/x
  3. Step 3: Cross multiply
    18,423.19x = 25,428.10 × 11,707.50
  4. Step 4: Simplify right side
    18,423.19x = 297,699,590.74
  5. Step 5: Solve for x
    x = 297,699,590.74/18,423.19
  6. Step 6: Final answer
    x = 16,158.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.