Home / 15,688.80-23,590.80-13,154.40

Finding the Fourth Proportional to 15,688.80, 23,590.80 and 13,154.40

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Solution

The fourth proportional to 15,688.80, 23,590.80 and 13,154.40 is: 19,779.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,688.80 : 23,590.80 = 13,154.40 : x
  2. Step 2: Convert to fraction form
    15,688.80/23,590.80 = 13,154.40/x
  3. Step 3: Cross multiply
    15,688.80x = 23,590.80 × 13,154.40
  4. Step 4: Simplify right side
    15,688.80x = 310,322,819.52
  5. Step 5: Solve for x
    x = 310,322,819.52/15,688.80
  6. Step 6: Final answer
    x = 19,779.90

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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.