Home / 18,915.93-28,378.40-5,767.47

Finding the Fourth Proportional to 18,915.93, 28,378.40 and 5,767.47

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Solution

The fourth proportional to 18,915.93, 28,378.40 and 5,767.47 is: 8,652.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,915.93 : 28,378.40 = 5,767.47 : x
  2. Step 2: Convert to fraction form
    18,915.93/28,378.40 = 5,767.47/x
  3. Step 3: Cross multiply
    18,915.93x = 28,378.40 × 5,767.47
  4. Step 4: Simplify right side
    18,915.93x = 163,671,541.81
  5. Step 5: Solve for x
    x = 163,671,541.81/18,915.93
  6. Step 6: Final answer
    x = 8,652.58

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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.