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Finding the Fourth Proportional to 15,017.59, 20,724.14 and 8,303.16

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Solution

The fourth proportional to 15,017.59, 20,724.14 and 8,303.16 is: 11,458.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.59 : 20,724.14 = 8,303.16 : x
  2. Step 2: Convert to fraction form
    15,017.59/20,724.14 = 8,303.16/x
  3. Step 3: Cross multiply
    15,017.59x = 20,724.14 × 8,303.16
  4. Step 4: Simplify right side
    15,017.59x = 172,075,746.66
  5. Step 5: Solve for x
    x = 172,075,746.66/15,017.59
  6. Step 6: Final answer
    x = 11,458.28

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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.