Home / 10,870.15-16,272.40-9,830.64

Finding the Fourth Proportional to 10,870.15, 16,272.40 and 9,830.64

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Solution

The fourth proportional to 10,870.15, 16,272.40 and 9,830.64 is: 14,716.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,870.15 : 16,272.40 = 9,830.64 : x
  2. Step 2: Convert to fraction form
    10,870.15/16,272.40 = 9,830.64/x
  3. Step 3: Cross multiply
    10,870.15x = 16,272.40 × 9,830.64
  4. Step 4: Simplify right side
    10,870.15x = 159,968,122.36
  5. Step 5: Solve for x
    x = 159,968,122.36/10,870.15
  6. Step 6: Final answer
    x = 14,716.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.