Home / 28,256.59-38,994.57-15,510.97

Finding the Fourth Proportional to 28,256.59, 38,994.57 and 15,510.97

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Solution

The fourth proportional to 28,256.59, 38,994.57 and 15,510.97 is: 21,405.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,256.59 : 38,994.57 = 15,510.97 : x
  2. Step 2: Convert to fraction form
    28,256.59/38,994.57 = 15,510.97/x
  3. Step 3: Cross multiply
    28,256.59x = 38,994.57 × 15,510.97
  4. Step 4: Simplify right side
    28,256.59x = 604,843,605.43
  5. Step 5: Solve for x
    x = 604,843,605.43/28,256.59
  6. Step 6: Final answer
    x = 21,405.40

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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.