Home / 13,570.39-18,726.87-7,520.51

Finding the Fourth Proportional to 13,570.39, 18,726.87 and 7,520.51

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Solution

The fourth proportional to 13,570.39, 18,726.87 and 7,520.51 is: 10,378.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,570.39 : 18,726.87 = 7,520.51 : x
  2. Step 2: Convert to fraction form
    13,570.39/18,726.87 = 7,520.51/x
  3. Step 3: Cross multiply
    13,570.39x = 18,726.87 × 7,520.51
  4. Step 4: Simplify right side
    13,570.39x = 140,835,642.50
  5. Step 5: Solve for x
    x = 140,835,642.50/13,570.39
  6. Step 6: Final answer
    x = 10,378.15

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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.