Home / 22,420.13-30,939.77-12,994.16

Finding the Fourth Proportional to 22,420.13, 30,939.77 and 12,994.16

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Solution

The fourth proportional to 22,420.13, 30,939.77 and 12,994.16 is: 17,931.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,420.13 : 30,939.77 = 12,994.16 : x
  2. Step 2: Convert to fraction form
    22,420.13/30,939.77 = 12,994.16/x
  3. Step 3: Cross multiply
    22,420.13x = 30,939.77 × 12,994.16
  4. Step 4: Simplify right side
    22,420.13x = 402,036,199.53
  5. Step 5: Solve for x
    x = 402,036,199.53/22,420.13
  6. Step 6: Final answer
    x = 17,931.93

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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.