Home / 27,689.07-38,210.70-15,752.40

Finding the Fourth Proportional to 27,689.07, 38,210.70 and 15,752.40

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Solution

The fourth proportional to 27,689.07, 38,210.70 and 15,752.40 is: 21,738.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,689.07 : 38,210.70 = 15,752.40 : x
  2. Step 2: Convert to fraction form
    27,689.07/38,210.70 = 15,752.40/x
  3. Step 3: Cross multiply
    27,689.07x = 38,210.70 × 15,752.40
  4. Step 4: Simplify right side
    27,689.07x = 601,910,230.68
  5. Step 5: Solve for x
    x = 601,910,230.68/27,689.07
  6. Step 6: Final answer
    x = 21,738.19

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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.