Home / 13,320.12-18,387.24-9,085.16

Finding the Fourth Proportional to 13,320.12, 18,387.24 and 9,085.16

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Solution

The fourth proportional to 13,320.12, 18,387.24 and 9,085.16 is: 12,541.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.12 : 18,387.24 = 9,085.16 : x
  2. Step 2: Convert to fraction form
    13,320.12/18,387.24 = 9,085.16/x
  3. Step 3: Cross multiply
    13,320.12x = 18,387.24 × 9,085.16
  4. Step 4: Simplify right side
    13,320.12x = 167,051,017.36
  5. Step 5: Solve for x
    x = 167,051,017.36/13,320.12
  6. Step 6: Final answer
    x = 12,541.25

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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.