Home / 13,579.32-18,740.58-7,916.24

Finding the Fourth Proportional to 13,579.32, 18,740.58 and 7,916.24

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Solution

The fourth proportional to 13,579.32, 18,740.58 and 7,916.24 is: 10,925.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.32 : 18,740.58 = 7,916.24 : x
  2. Step 2: Convert to fraction form
    13,579.32/18,740.58 = 7,916.24/x
  3. Step 3: Cross multiply
    13,579.32x = 18,740.58 × 7,916.24
  4. Step 4: Simplify right side
    13,579.32x = 148,354,929.02
  5. Step 5: Solve for x
    x = 148,354,929.02/13,579.32
  6. Step 6: Final answer
    x = 10,925.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.