Home / 15,657.84-21,604.32-9,372.24

Finding the Fourth Proportional to 15,657.84, 21,604.32 and 9,372.24

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Solution

The fourth proportional to 15,657.84, 21,604.32 and 9,372.24 is: 12,931.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,657.84 : 21,604.32 = 9,372.24 : x
  2. Step 2: Convert to fraction form
    15,657.84/21,604.32 = 9,372.24/x
  3. Step 3: Cross multiply
    15,657.84x = 21,604.32 × 9,372.24
  4. Step 4: Simplify right side
    15,657.84x = 202,480,872.08
  5. Step 5: Solve for x
    x = 202,480,872.08/15,657.84
  6. Step 6: Final answer
    x = 12,931.60

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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.