Home / 12,005.40-18,008.10-9,526.80

Finding the Fourth Proportional to 12,005.40, 18,008.10 and 9,526.80

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Solution

The fourth proportional to 12,005.40, 18,008.10 and 9,526.80 is: 14,290.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.40 : 18,008.10 = 9,526.80 : x
  2. Step 2: Convert to fraction form
    12,005.40/18,008.10 = 9,526.80/x
  3. Step 3: Cross multiply
    12,005.40x = 18,008.10 × 9,526.80
  4. Step 4: Simplify right side
    12,005.40x = 171,559,567.08
  5. Step 5: Solve for x
    x = 171,559,567.08/12,005.40
  6. Step 6: Final answer
    x = 14,290.20

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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.