Home / 13,911.60-19,182.96-9,931.08

Finding the Fourth Proportional to 13,911.60, 19,182.96 and 9,931.08

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Solution

The fourth proportional to 13,911.60, 19,182.96 and 9,931.08 is: 13,694.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.60 : 19,182.96 = 9,931.08 : x
  2. Step 2: Convert to fraction form
    13,911.60/19,182.96 = 9,931.08/x
  3. Step 3: Cross multiply
    13,911.60x = 19,182.96 × 9,931.08
  4. Step 4: Simplify right side
    13,911.60x = 190,507,510.40
  5. Step 5: Solve for x
    x = 190,507,510.40/13,911.60
  6. Step 6: Final answer
    x = 13,694.15

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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.