Home / 13,545.81-18,695.79-9,077.36

Finding the Fourth Proportional to 13,545.81, 18,695.79 and 9,077.36

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Solution

The fourth proportional to 13,545.81, 18,695.79 and 9,077.36 is: 12,528.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,545.81 : 18,695.79 = 9,077.36 : x
  2. Step 2: Convert to fraction form
    13,545.81/18,695.79 = 9,077.36/x
  3. Step 3: Cross multiply
    13,545.81x = 18,695.79 × 9,077.36
  4. Step 4: Simplify right side
    13,545.81x = 169,708,322.84
  5. Step 5: Solve for x
    x = 169,708,322.84/13,545.81
  6. Step 6: Final answer
    x = 12,528.47

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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.