Home / 13,756.59-20,637.95-4,991.31

Finding the Fourth Proportional to 13,756.59, 20,637.95 and 4,991.31

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Solution

The fourth proportional to 13,756.59, 20,637.95 and 4,991.31 is: 7,488.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,756.59 : 20,637.95 = 4,991.31 : x
  2. Step 2: Convert to fraction form
    13,756.59/20,637.95 = 4,991.31/x
  3. Step 3: Cross multiply
    13,756.59x = 20,637.95 × 4,991.31
  4. Step 4: Simplify right side
    13,756.59x = 103,010,381.26
  5. Step 5: Solve for x
    x = 103,010,381.26/13,756.59
  6. Step 6: Final answer
    x = 7,488.08

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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.