Home / 28,585.10-42,881.07-10,818.56

Finding the Fourth Proportional to 28,585.10, 42,881.07 and 10,818.56

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Solution

The fourth proportional to 28,585.10, 42,881.07 and 10,818.56 is: 16,229.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,585.10 : 42,881.07 = 10,818.56 : x
  2. Step 2: Convert to fraction form
    28,585.10/42,881.07 = 10,818.56/x
  3. Step 3: Cross multiply
    28,585.10x = 42,881.07 × 10,818.56
  4. Step 4: Simplify right side
    28,585.10x = 463,911,428.66
  5. Step 5: Solve for x
    x = 463,911,428.66/28,585.10
  6. Step 6: Final answer
    x = 16,229.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.