Home / 10,210.59-15,316.95-2,815.05

Finding the Fourth Proportional to 10,210.59, 15,316.95 and 2,815.05

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Solution

The fourth proportional to 10,210.59, 15,316.95 and 2,815.05 is: 4,222.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,210.59 : 15,316.95 = 2,815.05 : x
  2. Step 2: Convert to fraction form
    10,210.59/15,316.95 = 2,815.05/x
  3. Step 3: Cross multiply
    10,210.59x = 15,316.95 × 2,815.05
  4. Step 4: Simplify right side
    10,210.59x = 43,117,980.10
  5. Step 5: Solve for x
    x = 43,117,980.10/10,210.59
  6. Step 6: Final answer
    x = 4,222.87

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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.