Home / 9,986.24-13,779.20-6,210.40

Finding the Fourth Proportional to 9,986.24, 13,779.20 and 6,210.40

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Solution

The fourth proportional to 9,986.24, 13,779.20 and 6,210.40 is: 8,569.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.24 : 13,779.20 = 6,210.40 : x
  2. Step 2: Convert to fraction form
    9,986.24/13,779.20 = 6,210.40/x
  3. Step 3: Cross multiply
    9,986.24x = 13,779.20 × 6,210.40
  4. Step 4: Simplify right side
    9,986.24x = 85,574,343.68
  5. Step 5: Solve for x
    x = 85,574,343.68/9,986.24
  6. Step 6: Final answer
    x = 8,569.23

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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.