Home / 19,319.67-26,661.49-10,821.72

Finding the Fourth Proportional to 19,319.67, 26,661.49 and 10,821.72

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Solution

The fourth proportional to 19,319.67, 26,661.49 and 10,821.72 is: 14,934.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,319.67 : 26,661.49 = 10,821.72 : x
  2. Step 2: Convert to fraction form
    19,319.67/26,661.49 = 10,821.72/x
  3. Step 3: Cross multiply
    19,319.67x = 26,661.49 × 10,821.72
  4. Step 4: Simplify right side
    19,319.67x = 288,523,125.45
  5. Step 5: Solve for x
    x = 288,523,125.45/19,319.67
  6. Step 6: Final answer
    x = 14,934.16

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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.