Home / 9,988.83-14,989.93-4,145.45

Finding the Fourth Proportional to 9,988.83, 14,989.93 and 4,145.45

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Solution

The fourth proportional to 9,988.83, 14,989.93 and 4,145.45 is: 6,220.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.83 : 14,989.93 = 4,145.45 : x
  2. Step 2: Convert to fraction form
    9,988.83/14,989.93 = 4,145.45/x
  3. Step 3: Cross multiply
    9,988.83x = 14,989.93 × 4,145.45
  4. Step 4: Simplify right side
    9,988.83x = 62,139,920.01
  5. Step 5: Solve for x
    x = 62,139,920.01/9,988.83
  6. Step 6: Final answer
    x = 6,220.94

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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.