Home / 13,529.89-18,670.55-7,560.39

Finding the Fourth Proportional to 13,529.89, 18,670.55 and 7,560.39

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Solution

The fourth proportional to 13,529.89, 18,670.55 and 7,560.39 is: 10,432.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,529.89 : 18,670.55 = 7,560.39 : x
  2. Step 2: Convert to fraction form
    13,529.89/18,670.55 = 7,560.39/x
  3. Step 3: Cross multiply
    13,529.89x = 18,670.55 × 7,560.39
  4. Step 4: Simplify right side
    13,529.89x = 141,156,639.51
  5. Step 5: Solve for x
    x = 141,156,639.51/13,529.89
  6. Step 6: Final answer
    x = 10,432.95

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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.