Home / 21,303.84-29,402.08-15,355.20

Finding the Fourth Proportional to 21,303.84, 29,402.08 and 15,355.20

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Solution

The fourth proportional to 21,303.84, 29,402.08 and 15,355.20 is: 21,192.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.84 : 29,402.08 = 15,355.20 : x
  2. Step 2: Convert to fraction form
    21,303.84/29,402.08 = 15,355.20/x
  3. Step 3: Cross multiply
    21,303.84x = 29,402.08 × 15,355.20
  4. Step 4: Simplify right side
    21,303.84x = 451,474,818.82
  5. Step 5: Solve for x
    x = 451,474,818.82/21,303.84
  6. Step 6: Final answer
    x = 21,192.18

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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.