Home / 18,619.79-25,688.04-10,657.76

Finding the Fourth Proportional to 18,619.79, 25,688.04 and 10,657.76

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Solution

The fourth proportional to 18,619.79, 25,688.04 and 10,657.76 is: 14,703.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,619.79 : 25,688.04 = 10,657.76 : x
  2. Step 2: Convert to fraction form
    18,619.79/25,688.04 = 10,657.76/x
  3. Step 3: Cross multiply
    18,619.79x = 25,688.04 × 10,657.76
  4. Step 4: Simplify right side
    18,619.79x = 273,776,965.19
  5. Step 5: Solve for x
    x = 273,776,965.19/18,619.79
  6. Step 6: Final answer
    x = 14,703.55

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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.