Home / 15,730.52-21,700.86-10,143.32

Finding the Fourth Proportional to 15,730.52, 21,700.86 and 10,143.32

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Solution

The fourth proportional to 15,730.52, 21,700.86 and 10,143.32 is: 13,993.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,730.52 : 21,700.86 = 10,143.32 : x
  2. Step 2: Convert to fraction form
    15,730.52/21,700.86 = 10,143.32/x
  3. Step 3: Cross multiply
    15,730.52x = 21,700.86 × 10,143.32
  4. Step 4: Simplify right side
    15,730.52x = 220,118,767.26
  5. Step 5: Solve for x
    x = 220,118,767.26/15,730.52
  6. Step 6: Final answer
    x = 13,993.10

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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.