Home / 18,929.12-26,126.70-10,975.74

Finding the Fourth Proportional to 18,929.12, 26,126.70 and 10,975.74

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Solution

The fourth proportional to 18,929.12, 26,126.70 and 10,975.74 is: 15,149.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.12 : 26,126.70 = 10,975.74 : x
  2. Step 2: Convert to fraction form
    18,929.12/26,126.70 = 10,975.74/x
  3. Step 3: Cross multiply
    18,929.12x = 26,126.70 × 10,975.74
  4. Step 4: Simplify right side
    18,929.12x = 286,759,866.26
  5. Step 5: Solve for x
    x = 286,759,866.26/18,929.12
  6. Step 6: Final answer
    x = 15,149.14

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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.