Home / 18,818.61-25,970.49-10,860.81

Finding the Fourth Proportional to 18,818.61, 25,970.49 and 10,860.81

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Solution

The fourth proportional to 18,818.61, 25,970.49 and 10,860.81 is: 14,988.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.61 : 25,970.49 = 10,860.81 : x
  2. Step 2: Convert to fraction form
    18,818.61/25,970.49 = 10,860.81/x
  3. Step 3: Cross multiply
    18,818.61x = 25,970.49 × 10,860.81
  4. Step 4: Simplify right side
    18,818.61x = 282,060,557.50
  5. Step 5: Solve for x
    x = 282,060,557.50/18,818.61
  6. Step 6: Final answer
    x = 14,988.38

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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.