Home / 21,041.65-29,025.23-13,485.30

Finding the Fourth Proportional to 21,041.65, 29,025.23 and 13,485.30

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Solution

The fourth proportional to 21,041.65, 29,025.23 and 13,485.30 is: 18,601.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,041.65 : 29,025.23 = 13,485.30 : x
  2. Step 2: Convert to fraction form
    21,041.65/29,025.23 = 13,485.30/x
  3. Step 3: Cross multiply
    21,041.65x = 29,025.23 × 13,485.30
  4. Step 4: Simplify right side
    21,041.65x = 391,413,934.12
  5. Step 5: Solve for x
    x = 391,413,934.12/21,041.65
  6. Step 6: Final answer
    x = 18,601.87

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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.