Home / 10,430.80-15,642.95-3,503.68

Finding the Fourth Proportional to 10,430.80, 15,642.95 and 3,503.68

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Solution

The fourth proportional to 10,430.80, 15,642.95 and 3,503.68 is: 5,254.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,430.80 : 15,642.95 = 3,503.68 : x
  2. Step 2: Convert to fraction form
    10,430.80/15,642.95 = 3,503.68/x
  3. Step 3: Cross multiply
    10,430.80x = 15,642.95 × 3,503.68
  4. Step 4: Simplify right side
    10,430.80x = 54,807,834.43
  5. Step 5: Solve for x
    x = 54,807,834.43/10,430.80
  6. Step 6: Final answer
    x = 5,254.42

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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.