Home / 20,887.69-31,292.29-10,345.45

Finding the Fourth Proportional to 20,887.69, 31,292.29 and 10,345.45

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Solution

The fourth proportional to 20,887.69, 31,292.29 and 10,345.45 is: 15,498.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.69 : 31,292.29 = 10,345.45 : x
  2. Step 2: Convert to fraction form
    20,887.69/31,292.29 = 10,345.45/x
  3. Step 3: Cross multiply
    20,887.69x = 31,292.29 × 10,345.45
  4. Step 4: Simplify right side
    20,887.69x = 323,732,821.58
  5. Step 5: Solve for x
    x = 323,732,821.58/20,887.69
  6. Step 6: Final answer
    x = 15,498.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.