Home / 28,663.50-42,972.63-18,111.29

Finding the Fourth Proportional to 28,663.50, 42,972.63 and 18,111.29

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Solution

The fourth proportional to 28,663.50, 42,972.63 and 18,111.29 is: 27,152.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,663.50 : 42,972.63 = 18,111.29 : x
  2. Step 2: Convert to fraction form
    28,663.50/42,972.63 = 18,111.29/x
  3. Step 3: Cross multiply
    28,663.50x = 42,972.63 × 18,111.29
  4. Step 4: Simplify right side
    28,663.50x = 778,289,549.13
  5. Step 5: Solve for x
    x = 778,289,549.13/28,663.50
  6. Step 6: Final answer
    x = 27,152.63

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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.