Home / 13,830.47-19,085.96-7,862.13

Finding the Fourth Proportional to 13,830.47, 19,085.96 and 7,862.13

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Solution

The fourth proportional to 13,830.47, 19,085.96 and 7,862.13 is: 10,849.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.47 : 19,085.96 = 7,862.13 : x
  2. Step 2: Convert to fraction form
    13,830.47/19,085.96 = 7,862.13/x
  3. Step 3: Cross multiply
    13,830.47x = 19,085.96 × 7,862.13
  4. Step 4: Simplify right side
    13,830.47x = 150,056,330.96
  5. Step 5: Solve for x
    x = 150,056,330.96/13,830.47
  6. Step 6: Final answer
    x = 10,849.70

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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.