Home / 28,004.32-38,645.98-15,429.08

Finding the Fourth Proportional to 28,004.32, 38,645.98 and 15,429.08

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Solution

The fourth proportional to 28,004.32, 38,645.98 and 15,429.08 is: 21,292.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,004.32 : 38,645.98 = 15,429.08 : x
  2. Step 2: Convert to fraction form
    28,004.32/38,645.98 = 15,429.08/x
  3. Step 3: Cross multiply
    28,004.32x = 38,645.98 × 15,429.08
  4. Step 4: Simplify right side
    28,004.32x = 596,271,917.10
  5. Step 5: Solve for x
    x = 596,271,917.10/28,004.32
  6. Step 6: Final answer
    x = 21,292.14

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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.