Home / 15,315.13-21,137.15-9,350.26

Finding the Fourth Proportional to 15,315.13, 21,137.15 and 9,350.26

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Solution

The fourth proportional to 15,315.13, 21,137.15 and 9,350.26 is: 12,904.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315.13 : 21,137.15 = 9,350.26 : x
  2. Step 2: Convert to fraction form
    15,315.13/21,137.15 = 9,350.26/x
  3. Step 3: Cross multiply
    15,315.13x = 21,137.15 × 9,350.26
  4. Step 4: Simplify right side
    15,315.13x = 197,637,848.16
  5. Step 5: Solve for x
    x = 197,637,848.16/15,315.13
  6. Step 6: Final answer
    x = 12,904.75

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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.