Home / 10,005.86-15,009.54-2,985.32

Finding the Fourth Proportional to 10,005.86, 15,009.54 and 2,985.32

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Solution

The fourth proportional to 10,005.86, 15,009.54 and 2,985.32 is: 4,478.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,005.86 : 15,009.54 = 2,985.32 : x
  2. Step 2: Convert to fraction form
    10,005.86/15,009.54 = 2,985.32/x
  3. Step 3: Cross multiply
    10,005.86x = 15,009.54 × 2,985.32
  4. Step 4: Simplify right side
    10,005.86x = 44,808,306.28
  5. Step 5: Solve for x
    x = 44,808,306.28/10,005.86
  6. Step 6: Final answer
    x = 4,478.21

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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.