Home / 28,123.02-42,156.54-15,648.72

Finding the Fourth Proportional to 28,123.02, 42,156.54 and 15,648.72

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Solution

The fourth proportional to 28,123.02, 42,156.54 and 15,648.72 is: 23,457.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,123.02 : 42,156.54 = 15,648.72 : x
  2. Step 2: Convert to fraction form
    28,123.02/42,156.54 = 15,648.72/x
  3. Step 3: Cross multiply
    28,123.02x = 42,156.54 × 15,648.72
  4. Step 4: Simplify right side
    28,123.02x = 659,695,890.63
  5. Step 5: Solve for x
    x = 659,695,890.63/28,123.02
  6. Step 6: Final answer
    x = 23,457.51

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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.