Home / 10,376.36-14,315.28-6,390.56

Finding the Fourth Proportional to 10,376.36, 14,315.28 and 6,390.56

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Solution

The fourth proportional to 10,376.36, 14,315.28 and 6,390.56 is: 8,816.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,376.36 : 14,315.28 = 6,390.56 : x
  2. Step 2: Convert to fraction form
    10,376.36/14,315.28 = 6,390.56/x
  3. Step 3: Cross multiply
    10,376.36x = 14,315.28 × 6,390.56
  4. Step 4: Simplify right side
    10,376.36x = 91,482,655.76
  5. Step 5: Solve for x
    x = 91,482,655.76/10,376.36
  6. Step 6: Final answer
    x = 8,816.45

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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.