Home / 13,490.07-18,614.93-7,521.18

Finding the Fourth Proportional to 13,490.07, 18,614.93 and 7,521.18

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Solution

The fourth proportional to 13,490.07, 18,614.93 and 7,521.18 is: 10,378.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.07 : 18,614.93 = 7,521.18 : x
  2. Step 2: Convert to fraction form
    13,490.07/18,614.93 = 7,521.18/x
  3. Step 3: Cross multiply
    13,490.07x = 18,614.93 × 7,521.18
  4. Step 4: Simplify right side
    13,490.07x = 140,006,239.22
  5. Step 5: Solve for x
    x = 140,006,239.22/13,490.07
  6. Step 6: Final answer
    x = 10,378.47

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Half scale
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Double scale
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Similar ratio
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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.