Home / 13,177.65-18,190.13-7,870.53

Finding the Fourth Proportional to 13,177.65, 18,190.13 and 7,870.53

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Solution

The fourth proportional to 13,177.65, 18,190.13 and 7,870.53 is: 10,864.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.65 : 18,190.13 = 7,870.53 : x
  2. Step 2: Convert to fraction form
    13,177.65/18,190.13 = 7,870.53/x
  3. Step 3: Cross multiply
    13,177.65x = 18,190.13 × 7,870.53
  4. Step 4: Simplify right side
    13,177.65x = 143,165,924.52
  5. Step 5: Solve for x
    x = 143,165,924.52/13,177.65
  6. Step 6: Final answer
    x = 10,864.30

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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.