Home / 13,230.84-18,258.18-7,487.76

Finding the Fourth Proportional to 13,230.84, 18,258.18 and 7,487.76

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Solution

The fourth proportional to 13,230.84, 18,258.18 and 7,487.76 is: 10,332.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,230.84 : 18,258.18 = 7,487.76 : x
  2. Step 2: Convert to fraction form
    13,230.84/18,258.18 = 7,487.76/x
  3. Step 3: Cross multiply
    13,230.84x = 18,258.18 × 7,487.76
  4. Step 4: Simplify right side
    13,230.84x = 136,712,869.88
  5. Step 5: Solve for x
    x = 136,712,869.88/13,230.84
  6. Step 6: Final answer
    x = 10,332.89

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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.