Home / 19,870.08-27,390.24-15,671.04

Finding the Fourth Proportional to 19,870.08, 27,390.24 and 15,671.04

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Solution

The fourth proportional to 19,870.08, 27,390.24 and 15,671.04 is: 21,602.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,870.08 : 27,390.24 = 15,671.04 : x
  2. Step 2: Convert to fraction form
    19,870.08/27,390.24 = 15,671.04/x
  3. Step 3: Cross multiply
    19,870.08x = 27,390.24 × 15,671.04
  4. Step 4: Simplify right side
    19,870.08x = 429,233,546.65
  5. Step 5: Solve for x
    x = 429,233,546.65/19,870.08
  6. Step 6: Final answer
    x = 21,602.00

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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.