Home / 15,555.30-21,455.37-9,585.06

Finding the Fourth Proportional to 15,555.30, 21,455.37 and 9,585.06

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Solution

The fourth proportional to 15,555.30, 21,455.37 and 9,585.06 is: 13,220.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,555.30 : 21,455.37 = 9,585.06 : x
  2. Step 2: Convert to fraction form
    15,555.30/21,455.37 = 9,585.06/x
  3. Step 3: Cross multiply
    15,555.30x = 21,455.37 × 9,585.06
  4. Step 4: Simplify right side
    15,555.30x = 205,651,008.77
  5. Step 5: Solve for x
    x = 205,651,008.77/15,555.30
  6. Step 6: Final answer
    x = 13,220.64

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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.