Home / 10,158.08-14,018.05-5,681.78

Finding the Fourth Proportional to 10,158.08, 14,018.05 and 5,681.78

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Solution

The fourth proportional to 10,158.08, 14,018.05 and 5,681.78 is: 7,840.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,158.08 : 14,018.05 = 5,681.78 : x
  2. Step 2: Convert to fraction form
    10,158.08/14,018.05 = 5,681.78/x
  3. Step 3: Cross multiply
    10,158.08x = 14,018.05 × 5,681.78
  4. Step 4: Simplify right side
    10,158.08x = 79,647,476.13
  5. Step 5: Solve for x
    x = 79,647,476.13/10,158.08
  6. Step 6: Final answer
    x = 7,840.80

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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.