Home / 13,038.49-17,987.16-7,730.29

Finding the Fourth Proportional to 13,038.49, 17,987.16 and 7,730.29

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Solution

The fourth proportional to 13,038.49, 17,987.16 and 7,730.29 is: 10,664.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,038.49 : 17,987.16 = 7,730.29 : x
  2. Step 2: Convert to fraction form
    13,038.49/17,987.16 = 7,730.29/x
  3. Step 3: Cross multiply
    13,038.49x = 17,987.16 × 7,730.29
  4. Step 4: Simplify right side
    13,038.49x = 139,045,963.08
  5. Step 5: Solve for x
    x = 139,045,963.08/13,038.49
  6. Step 6: Final answer
    x = 10,664.27

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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.