Home / 42,915.78-64,376.55-14,838.57

Finding the Fourth Proportional to 42,915.78, 64,376.55 and 14,838.57

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Solution

The fourth proportional to 42,915.78, 64,376.55 and 14,838.57 is: 22,258.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,915.78 : 64,376.55 = 14,838.57 : x
  2. Step 2: Convert to fraction form
    42,915.78/64,376.55 = 14,838.57/x
  3. Step 3: Cross multiply
    42,915.78x = 64,376.55 × 14,838.57
  4. Step 4: Simplify right side
    42,915.78x = 955,255,943.53
  5. Step 5: Solve for x
    x = 955,255,943.53/42,915.78
  6. Step 6: Final answer
    x = 22,258.85

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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.