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Finding the Fourth Proportional to 13,980.64, 19,293.65 and 7,607.64

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Solution

The fourth proportional to 13,980.64, 19,293.65 and 7,607.64 is: 10,498.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,980.64 : 19,293.65 = 7,607.64 : x
  2. Step 2: Convert to fraction form
    13,980.64/19,293.65 = 7,607.64/x
  3. Step 3: Cross multiply
    13,980.64x = 19,293.65 × 7,607.64
  4. Step 4: Simplify right side
    13,980.64x = 146,779,143.49
  5. Step 5: Solve for x
    x = 146,779,143.49/13,980.64
  6. Step 6: Final answer
    x = 10,498.74

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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.