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Finding the Fourth Proportional to 28,405.99, 42,547.02 and 23,419.63

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Solution

The fourth proportional to 28,405.99, 42,547.02 and 23,419.63 is: 35,078.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,405.99 : 42,547.02 = 23,419.63 : x
  2. Step 2: Convert to fraction form
    28,405.99/42,547.02 = 23,419.63/x
  3. Step 3: Cross multiply
    28,405.99x = 42,547.02 × 23,419.63
  4. Step 4: Simplify right side
    28,405.99x = 996,435,271.81
  5. Step 5: Solve for x
    x = 996,435,271.81/28,405.99
  6. Step 6: Final answer
    x = 35,078.35

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1.5x scale

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.