Home / 18,926.13-26,120.10-10,429.12

Finding the Fourth Proportional to 18,926.13, 26,120.10 and 10,429.12

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Solution

The fourth proportional to 18,926.13, 26,120.10 and 10,429.12 is: 14,393.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,926.13 : 26,120.10 = 10,429.12 : x
  2. Step 2: Convert to fraction form
    18,926.13/26,120.10 = 10,429.12/x
  3. Step 3: Cross multiply
    18,926.13x = 26,120.10 × 10,429.12
  4. Step 4: Simplify right side
    18,926.13x = 272,409,657.31
  5. Step 5: Solve for x
    x = 272,409,657.31/18,926.13
  6. Step 6: Final answer
    x = 14,393.31

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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.