Home / 10,415.16-14,368.86-6,429.36

Finding the Fourth Proportional to 10,415.16, 14,368.86 and 6,429.36

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Solution

The fourth proportional to 10,415.16, 14,368.86 and 6,429.36 is: 8,870.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,415.16 : 14,368.86 = 6,429.36 : x
  2. Step 2: Convert to fraction form
    10,415.16/14,368.86 = 6,429.36/x
  3. Step 3: Cross multiply
    10,415.16x = 14,368.86 × 6,429.36
  4. Step 4: Simplify right side
    10,415.16x = 92,382,573.73
  5. Step 5: Solve for x
    x = 92,382,573.73/10,415.16
  6. Step 6: Final answer
    x = 8,870.01

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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.