Home / 28,356.18-42,484.91-19,904.74

Finding the Fourth Proportional to 28,356.18, 42,484.91 and 19,904.74

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Solution

The fourth proportional to 28,356.18, 42,484.91 and 19,904.74 is: 29,822.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.18 : 42,484.91 = 19,904.74 : x
  2. Step 2: Convert to fraction form
    28,356.18/42,484.91 = 19,904.74/x
  3. Step 3: Cross multiply
    28,356.18x = 42,484.91 × 19,904.74
  4. Step 4: Simplify right side
    28,356.18x = 845,650,881.74
  5. Step 5: Solve for x
    x = 845,650,881.74/28,356.18
  6. Step 6: Final answer
    x = 29,822.46

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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.