Home / 12,459.48-18,663.30-9,125.40

Finding the Fourth Proportional to 12,459.48, 18,663.30 and 9,125.40

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Solution

The fourth proportional to 12,459.48, 18,663.30 and 9,125.40 is: 13,669.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,459.48 : 18,663.30 = 9,125.40 : x
  2. Step 2: Convert to fraction form
    12,459.48/18,663.30 = 9,125.40/x
  3. Step 3: Cross multiply
    12,459.48x = 18,663.30 × 9,125.40
  4. Step 4: Simplify right side
    12,459.48x = 170,310,077.82
  5. Step 5: Solve for x
    x = 170,310,077.82/12,459.48
  6. Step 6: Final answer
    x = 13,669.12

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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.