Home / 15,677.10-21,623-10,005.88

Finding the Fourth Proportional to 15,677.10, 21,623 and 10,005.88

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Solution

The fourth proportional to 15,677.10, 21,623 and 10,005.88 is: 13,800.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,677.10 : 21,623 = 10,005.88 : x
  2. Step 2: Convert to fraction form
    15,677.10/21,623 = 10,005.88/x
  3. Step 3: Cross multiply
    15,677.10x = 21,623 × 10,005.88
  4. Step 4: Simplify right side
    15,677.10x = 216,357,143.24
  5. Step 5: Solve for x
    x = 216,357,143.24/15,677.10
  6. Step 6: Final answer
    x = 13,800.84

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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.