Home / 28,179.04-38,886.60-15,603.52

Finding the Fourth Proportional to 28,179.04, 38,886.60 and 15,603.52

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Solution

The fourth proportional to 28,179.04, 38,886.60 and 15,603.52 is: 21,532.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.04 : 38,886.60 = 15,603.52 : x
  2. Step 2: Convert to fraction form
    28,179.04/38,886.60 = 15,603.52/x
  3. Step 3: Cross multiply
    28,179.04x = 38,886.60 × 15,603.52
  4. Step 4: Simplify right side
    28,179.04x = 606,767,840.83
  5. Step 5: Solve for x
    x = 606,767,840.83/28,179.04
  6. Step 6: Final answer
    x = 21,532.59

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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.