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Finding the Fourth Proportional to 37,987.30, 56,980.95 and 11,700.10

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Solution

The fourth proportional to 37,987.30, 56,980.95 and 11,700.10 is: 17,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,987.30 : 56,980.95 = 11,700.10 : x
  2. Step 2: Convert to fraction form
    37,987.30/56,980.95 = 11,700.10/x
  3. Step 3: Cross multiply
    37,987.30x = 56,980.95 × 11,700.10
  4. Step 4: Simplify right side
    37,987.30x = 666,682,813.10
  5. Step 5: Solve for x
    x = 666,682,813.10/37,987.30
  6. Step 6: Final answer
    x = 17,550.15

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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.