Home / 10,129.36-13,980.30-6,548.72

Finding the Fourth Proportional to 10,129.36, 13,980.30 and 6,548.72

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Solution

The fourth proportional to 10,129.36, 13,980.30 and 6,548.72 is: 9,038.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.36 : 13,980.30 = 6,548.72 : x
  2. Step 2: Convert to fraction form
    10,129.36/13,980.30 = 6,548.72/x
  3. Step 3: Cross multiply
    10,129.36x = 13,980.30 × 6,548.72
  4. Step 4: Simplify right side
    10,129.36x = 91,553,070.22
  5. Step 5: Solve for x
    x = 91,553,070.22/10,129.36
  6. Step 6: Final answer
    x = 9,038.39

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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.