Home / 15,282.93-21,094.85-9,905.18

Finding the Fourth Proportional to 15,282.93, 21,094.85 and 9,905.18

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Solution

The fourth proportional to 15,282.93, 21,094.85 and 9,905.18 is: 13,672.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,282.93 : 21,094.85 = 9,905.18 : x
  2. Step 2: Convert to fraction form
    15,282.93/21,094.85 = 9,905.18/x
  3. Step 3: Cross multiply
    15,282.93x = 21,094.85 × 9,905.18
  4. Step 4: Simplify right side
    15,282.93x = 208,948,363.82
  5. Step 5: Solve for x
    x = 208,948,363.82/15,282.93
  6. Step 6: Final answer
    x = 13,672.01

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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.