Home / 21,381.81-32,077.93-15,068.99

Finding the Fourth Proportional to 21,381.81, 32,077.93 and 15,068.99

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Solution

The fourth proportional to 21,381.81, 32,077.93 and 15,068.99 is: 22,607.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,381.81 : 32,077.93 = 15,068.99 : x
  2. Step 2: Convert to fraction form
    21,381.81/32,077.93 = 15,068.99/x
  3. Step 3: Cross multiply
    21,381.81x = 32,077.93 × 15,068.99
  4. Step 4: Simplify right side
    21,381.81x = 483,381,931.05
  5. Step 5: Solve for x
    x = 483,381,931.05/21,381.81
  6. Step 6: Final answer
    x = 22,607.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.