Home / 28,345.57-39,117.07-15,598.40

Finding the Fourth Proportional to 28,345.57, 39,117.07 and 15,598.40

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Solution

The fourth proportional to 28,345.57, 39,117.07 and 15,598.40 is: 21,525.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,345.57 : 39,117.07 = 15,598.40 : x
  2. Step 2: Convert to fraction form
    28,345.57/39,117.07 = 15,598.40/x
  3. Step 3: Cross multiply
    28,345.57x = 39,117.07 × 15,598.40
  4. Step 4: Simplify right side
    28,345.57x = 610,163,626.70
  5. Step 5: Solve for x
    x = 610,163,626.70/28,345.57
  6. Step 6: Final answer
    x = 21,525.89

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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.