Home / 15,808.70-21,826.18-10,145.89

Finding the Fourth Proportional to 15,808.70, 21,826.18 and 10,145.89

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Solution

The fourth proportional to 15,808.70, 21,826.18 and 10,145.89 is: 14,007.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,808.70 : 21,826.18 = 10,145.89 : x
  2. Step 2: Convert to fraction form
    15,808.70/21,826.18 = 10,145.89/x
  3. Step 3: Cross multiply
    15,808.70x = 21,826.18 × 10,145.89
  4. Step 4: Simplify right side
    15,808.70x = 221,445,941.47
  5. Step 5: Solve for x
    x = 221,445,941.47/15,808.70
  6. Step 6: Final answer
    x = 14,007.85

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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.