Home / 13,127.34-18,117.88-7,464.62

Finding the Fourth Proportional to 13,127.34, 18,117.88 and 7,464.62

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Solution

The fourth proportional to 13,127.34, 18,117.88 and 7,464.62 is: 10,302.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,127.34 : 18,117.88 = 7,464.62 : x
  2. Step 2: Convert to fraction form
    13,127.34/18,117.88 = 7,464.62/x
  3. Step 3: Cross multiply
    13,127.34x = 18,117.88 × 7,464.62
  4. Step 4: Simplify right side
    13,127.34x = 135,243,089.41
  5. Step 5: Solve for x
    x = 135,243,089.41/13,127.34
  6. Step 6: Final answer
    x = 10,302.40

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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.