Home / 21,292.47-29,316.74-18,099.45

Finding the Fourth Proportional to 21,292.47, 29,316.74 and 18,099.45

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Solution

The fourth proportional to 21,292.47, 29,316.74 and 18,099.45 is: 24,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,292.47 : 29,316.74 = 18,099.45 : x
  2. Step 2: Convert to fraction form
    21,292.47/29,316.74 = 18,099.45/x
  3. Step 3: Cross multiply
    21,292.47x = 29,316.74 × 18,099.45
  4. Step 4: Simplify right side
    21,292.47x = 530,616,779.30
  5. Step 5: Solve for x
    x = 530,616,779.30/21,292.47
  6. Step 6: Final answer
    x = 24,920.40

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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.