Home / 28,280.17-42,416.38-15,653.28

Finding the Fourth Proportional to 28,280.17, 42,416.38 and 15,653.28

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Solution

The fourth proportional to 28,280.17, 42,416.38 and 15,653.28 is: 23,477.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.17 : 42,416.38 = 15,653.28 : x
  2. Step 2: Convert to fraction form
    28,280.17/42,416.38 = 15,653.28/x
  3. Step 3: Cross multiply
    28,280.17x = 42,416.38 × 15,653.28
  4. Step 4: Simplify right side
    28,280.17x = 663,955,394.46
  5. Step 5: Solve for x
    x = 663,955,394.46/28,280.17
  6. Step 6: Final answer
    x = 23,477.77

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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.