Home / 10,678.19-15,907.86-10,561.55

Finding the Fourth Proportional to 10,678.19, 15,907.86 and 10,561.55

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Solution

The fourth proportional to 10,678.19, 15,907.86 and 10,561.55 is: 15,734.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,678.19 : 15,907.86 = 10,561.55 : x
  2. Step 2: Convert to fraction form
    10,678.19/15,907.86 = 10,561.55/x
  3. Step 3: Cross multiply
    10,678.19x = 15,907.86 × 10,561.55
  4. Step 4: Simplify right side
    10,678.19x = 168,011,579.24
  5. Step 5: Solve for x
    x = 168,011,579.24/10,678.19
  6. Step 6: Final answer
    x = 15,734.10

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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.