Home / 21,345.14-29,445.98-13,384.46

Finding the Fourth Proportional to 21,345.14, 29,445.98 and 13,384.46

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Solution

The fourth proportional to 21,345.14, 29,445.98 and 13,384.46 is: 18,464.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,345.14 : 29,445.98 = 13,384.46 : x
  2. Step 2: Convert to fraction form
    21,345.14/29,445.98 = 13,384.46/x
  3. Step 3: Cross multiply
    21,345.14x = 29,445.98 × 13,384.46
  4. Step 4: Simplify right side
    21,345.14x = 394,118,541.47
  5. Step 5: Solve for x
    x = 394,118,541.47/21,345.14
  6. Step 6: Final answer
    x = 18,464.09

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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.