Home / 13,528.69-18,663.08-8,490.42

Finding the Fourth Proportional to 13,528.69, 18,663.08 and 8,490.42

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Solution

The fourth proportional to 13,528.69, 18,663.08 and 8,490.42 is: 11,712.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,528.69 : 18,663.08 = 8,490.42 : x
  2. Step 2: Convert to fraction form
    13,528.69/18,663.08 = 8,490.42/x
  3. Step 3: Cross multiply
    13,528.69x = 18,663.08 × 8,490.42
  4. Step 4: Simplify right side
    13,528.69x = 158,457,345.24
  5. Step 5: Solve for x
    x = 158,457,345.24/13,528.69
  6. Step 6: Final answer
    x = 11,712.69

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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.