Home / 28,228.98-38,956.12-15,653.72

Finding the Fourth Proportional to 28,228.98, 38,956.12 and 15,653.72

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Solution

The fourth proportional to 28,228.98, 38,956.12 and 15,653.72 is: 21,602.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.98 : 38,956.12 = 15,653.72 : x
  2. Step 2: Convert to fraction form
    28,228.98/38,956.12 = 15,653.72/x
  3. Step 3: Cross multiply
    28,228.98x = 38,956.12 × 15,653.72
  4. Step 4: Simplify right side
    28,228.98x = 609,808,194.77
  5. Step 5: Solve for x
    x = 609,808,194.77/28,228.98
  6. Step 6: Final answer
    x = 21,602.20

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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.