Home / 18,921.85-26,111.14-10,423.68

Finding the Fourth Proportional to 18,921.85, 26,111.14 and 10,423.68

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Solution

The fourth proportional to 18,921.85, 26,111.14 and 10,423.68 is: 14,384.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,921.85 : 26,111.14 = 10,423.68 : x
  2. Step 2: Convert to fraction form
    18,921.85/26,111.14 = 10,423.68/x
  3. Step 3: Cross multiply
    18,921.85x = 26,111.14 × 10,423.68
  4. Step 4: Simplify right side
    18,921.85x = 272,174,115.68
  5. Step 5: Solve for x
    x = 272,174,115.68/18,921.85
  6. Step 6: Final answer
    x = 14,384.12

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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.