Home / 13,335.32-18,403.25-9,972.20

Finding the Fourth Proportional to 13,335.32, 18,403.25 and 9,972.20

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Solution

The fourth proportional to 13,335.32, 18,403.25 and 9,972.20 is: 13,762.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,335.32 : 18,403.25 = 9,972.20 : x
  2. Step 2: Convert to fraction form
    13,335.32/18,403.25 = 9,972.20/x
  3. Step 3: Cross multiply
    13,335.32x = 18,403.25 × 9,972.20
  4. Step 4: Simplify right side
    13,335.32x = 183,520,747.77
  5. Step 5: Solve for x
    x = 183,520,747.77/13,335.32
  6. Step 6: Final answer
    x = 13,762.01

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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.