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Finding the Fourth Proportional to 13,478.76, 18,601.14 and 7,510.29

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Solution

The fourth proportional to 13,478.76, 18,601.14 and 7,510.29 is: 10,364.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.76 : 18,601.14 = 7,510.29 : x
  2. Step 2: Convert to fraction form
    13,478.76/18,601.14 = 7,510.29/x
  3. Step 3: Cross multiply
    13,478.76x = 18,601.14 × 7,510.29
  4. Step 4: Simplify right side
    13,478.76x = 139,699,955.73
  5. Step 5: Solve for x
    x = 139,699,955.73/13,478.76
  6. Step 6: Final answer
    x = 10,364.45

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Half scale
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Double scale
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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.