Home / 13,785.90-19,002.48-10,870.65

Finding the Fourth Proportional to 13,785.90, 19,002.48 and 10,870.65

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Solution

The fourth proportional to 13,785.90, 19,002.48 and 10,870.65 is: 14,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.90 : 19,002.48 = 10,870.65 : x
  2. Step 2: Convert to fraction form
    13,785.90/19,002.48 = 10,870.65/x
  3. Step 3: Cross multiply
    13,785.90x = 19,002.48 × 10,870.65
  4. Step 4: Simplify right side
    13,785.90x = 206,569,309.21
  5. Step 5: Solve for x
    x = 206,569,309.21/13,785.90
  6. Step 6: Final answer
    x = 14,984.10

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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.