Home / 15,642.04-21,568.30-9,969.20

Finding the Fourth Proportional to 15,642.04, 21,568.30 and 9,969.20

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Solution

The fourth proportional to 15,642.04, 21,568.30 and 9,969.20 is: 13,746.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,642.04 : 21,568.30 = 9,969.20 : x
  2. Step 2: Convert to fraction form
    15,642.04/21,568.30 = 9,969.20/x
  3. Step 3: Cross multiply
    15,642.04x = 21,568.30 × 9,969.20
  4. Step 4: Simplify right side
    15,642.04x = 215,018,696.36
  5. Step 5: Solve for x
    x = 215,018,696.36/15,642.04
  6. Step 6: Final answer
    x = 13,746.21

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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.