Home / 39,678.08-59,487.96-18,916.16

Finding the Fourth Proportional to 39,678.08, 59,487.96 and 18,916.16

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Solution

The fourth proportional to 39,678.08, 59,487.96 and 18,916.16 is: 28,360.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,678.08 : 59,487.96 = 18,916.16 : x
  2. Step 2: Convert to fraction form
    39,678.08/59,487.96 = 18,916.16/x
  3. Step 3: Cross multiply
    39,678.08x = 59,487.96 × 18,916.16
  4. Step 4: Simplify right side
    39,678.08x = 1,125,283,769.43
  5. Step 5: Solve for x
    x = 1,125,283,769.43/39,678.08
  6. Step 6: Final answer
    x = 28,360.34

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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.