Home / 10,280.45-15,347.64-9,915.95

Finding the Fourth Proportional to 10,280.45, 15,347.64 and 9,915.95

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Solution

The fourth proportional to 10,280.45, 15,347.64 and 9,915.95 is: 14,803.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280.45 : 15,347.64 = 9,915.95 : x
  2. Step 2: Convert to fraction form
    10,280.45/15,347.64 = 9,915.95/x
  3. Step 3: Cross multiply
    10,280.45x = 15,347.64 × 9,915.95
  4. Step 4: Simplify right side
    10,280.45x = 152,186,354.12
  5. Step 5: Solve for x
    x = 152,186,354.12/10,280.45
  6. Step 6: Final answer
    x = 14,803.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.