Home / 13,465.08-18,581.52-7,415.49

Finding the Fourth Proportional to 13,465.08, 18,581.52 and 7,415.49

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Solution

The fourth proportional to 13,465.08, 18,581.52 and 7,415.49 is: 10,233.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465.08 : 18,581.52 = 7,415.49 : x
  2. Step 2: Convert to fraction form
    13,465.08/18,581.52 = 7,415.49/x
  3. Step 3: Cross multiply
    13,465.08x = 18,581.52 × 7,415.49
  4. Step 4: Simplify right side
    13,465.08x = 137,791,075.74
  5. Step 5: Solve for x
    x = 137,791,075.74/13,465.08
  6. Step 6: Final answer
    x = 10,233.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.