Home / 15,519.06-21,417.93-13,587.18

Finding the Fourth Proportional to 15,519.06, 21,417.93 and 13,587.18

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Solution

The fourth proportional to 15,519.06, 21,417.93 and 13,587.18 is: 18,751.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.06 : 21,417.93 = 13,587.18 : x
  2. Step 2: Convert to fraction form
    15,519.06/21,417.93 = 13,587.18/x
  3. Step 3: Cross multiply
    15,519.06x = 21,417.93 × 13,587.18
  4. Step 4: Simplify right side
    15,519.06x = 291,009,270.14
  5. Step 5: Solve for x
    x = 291,009,270.14/15,519.06
  6. Step 6: Final answer
    x = 18,751.73

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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.