Home / 8,988.16-12,403.92-5,009.80

Finding the Fourth Proportional to 8,988.16, 12,403.92 and 5,009.80

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Solution

The fourth proportional to 8,988.16, 12,403.92 and 5,009.80 is: 6,913.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.16 : 12,403.92 = 5,009.80 : x
  2. Step 2: Convert to fraction form
    8,988.16/12,403.92 = 5,009.80/x
  3. Step 3: Cross multiply
    8,988.16x = 12,403.92 × 5,009.80
  4. Step 4: Simplify right side
    8,988.16x = 62,141,158.42
  5. Step 5: Solve for x
    x = 62,141,158.42/8,988.16
  6. Step 6: Final answer
    x = 6,913.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.