Home / 9,988.70-14,977.65-4,145.90

Finding the Fourth Proportional to 9,988.70, 14,977.65 and 4,145.90

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Solution

The fourth proportional to 9,988.70, 14,977.65 and 4,145.90 is: 6,216.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.70 : 14,977.65 = 4,145.90 : x
  2. Step 2: Convert to fraction form
    9,988.70/14,977.65 = 4,145.90/x
  3. Step 3: Cross multiply
    9,988.70x = 14,977.65 × 4,145.90
  4. Step 4: Simplify right side
    9,988.70x = 62,095,839.14
  5. Step 5: Solve for x
    x = 62,095,839.14/9,988.70
  6. Step 6: Final answer
    x = 6,216.61

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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.