Home / 21,303.86-29,398.65-13,350.38

Finding the Fourth Proportional to 21,303.86, 29,398.65 and 13,350.38

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Solution

The fourth proportional to 21,303.86, 29,398.65 and 13,350.38 is: 18,423.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.86 : 29,398.65 = 13,350.38 : x
  2. Step 2: Convert to fraction form
    21,303.86/29,398.65 = 13,350.38/x
  3. Step 3: Cross multiply
    21,303.86x = 29,398.65 × 13,350.38
  4. Step 4: Simplify right side
    21,303.86x = 392,483,148.99
  5. Step 5: Solve for x
    x = 392,483,148.99/21,303.86
  6. Step 6: Final answer
    x = 18,423.10

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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.