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Finding the Fourth Proportional to 10,678.88, 15,953.23 and 10,290.08

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Solution

The fourth proportional to 10,678.88, 15,953.23 and 10,290.08 is: 15,372.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,678.88 : 15,953.23 = 10,290.08 : x
  2. Step 2: Convert to fraction form
    10,678.88/15,953.23 = 10,290.08/x
  3. Step 3: Cross multiply
    10,678.88x = 15,953.23 × 10,290.08
  4. Step 4: Simplify right side
    10,678.88x = 164,160,012.96
  5. Step 5: Solve for x
    x = 164,160,012.96/10,678.88
  6. Step 6: Final answer
    x = 15,372.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.