Home / 13,412.98-20,139.23-7,501.45

Finding the Fourth Proportional to 13,412.98, 20,139.23 and 7,501.45

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Solution

The fourth proportional to 13,412.98, 20,139.23 and 7,501.45 is: 11,263.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.98 : 20,139.23 = 7,501.45 : x
  2. Step 2: Convert to fraction form
    13,412.98/20,139.23 = 7,501.45/x
  3. Step 3: Cross multiply
    13,412.98x = 20,139.23 × 7,501.45
  4. Step 4: Simplify right side
    13,412.98x = 151,073,455.81
  5. Step 5: Solve for x
    x = 151,073,455.81/13,412.98
  6. Step 6: Final answer
    x = 11,263.22

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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.