Home / 11,637.20-17,421.50-7,681.16

Finding the Fourth Proportional to 11,637.20, 17,421.50 and 7,681.16

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Solution

The fourth proportional to 11,637.20, 17,421.50 and 7,681.16 is: 11,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,637.20 : 17,421.50 = 7,681.16 : x
  2. Step 2: Convert to fraction form
    11,637.20/17,421.50 = 7,681.16/x
  3. Step 3: Cross multiply
    11,637.20x = 17,421.50 × 7,681.16
  4. Step 4: Simplify right side
    11,637.20x = 133,817,328.94
  5. Step 5: Solve for x
    x = 133,817,328.94/11,637.20
  6. Step 6: Final answer
    x = 11,499.10

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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.