Home / 30,898.72-42,637.08-18,962.56

Finding the Fourth Proportional to 30,898.72, 42,637.08 and 18,962.56

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Solution

The fourth proportional to 30,898.72, 42,637.08 and 18,962.56 is: 26,166.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,898.72 : 42,637.08 = 18,962.56 : x
  2. Step 2: Convert to fraction form
    30,898.72/42,637.08 = 18,962.56/x
  3. Step 3: Cross multiply
    30,898.72x = 42,637.08 × 18,962.56
  4. Step 4: Simplify right side
    30,898.72x = 808,508,187.72
  5. Step 5: Solve for x
    x = 808,508,187.72/30,898.72
  6. Step 6: Final answer
    x = 26,166.40

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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.