Home / 15,378.72-23,070.96-4,987.68

Finding the Fourth Proportional to 15,378.72, 23,070.96 and 4,987.68

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Solution

The fourth proportional to 15,378.72, 23,070.96 and 4,987.68 is: 7,482.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,378.72 : 23,070.96 = 4,987.68 : x
  2. Step 2: Convert to fraction form
    15,378.72/23,070.96 = 4,987.68/x
  3. Step 3: Cross multiply
    15,378.72x = 23,070.96 × 4,987.68
  4. Step 4: Simplify right side
    15,378.72x = 115,070,565.77
  5. Step 5: Solve for x
    x = 115,070,565.77/15,378.72
  6. Step 6: Final answer
    x = 7,482.45

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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.