Home / 15,303.51-21,118.73-8,589.11

Finding the Fourth Proportional to 15,303.51, 21,118.73 and 8,589.11

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Solution

The fourth proportional to 15,303.51, 21,118.73 and 8,589.11 is: 11,852.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,303.51 : 21,118.73 = 8,589.11 : x
  2. Step 2: Convert to fraction form
    15,303.51/21,118.73 = 8,589.11/x
  3. Step 3: Cross multiply
    15,303.51x = 21,118.73 × 8,589.11
  4. Step 4: Simplify right side
    15,303.51x = 181,390,946.49
  5. Step 5: Solve for x
    x = 181,390,946.49/15,303.51
  6. Step 6: Final answer
    x = 11,852.90

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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.