Home / 15,812.08-21,820.80-9,528.64

Finding the Fourth Proportional to 15,812.08, 21,820.80 and 9,528.64

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Solution

The fourth proportional to 15,812.08, 21,820.80 and 9,528.64 is: 13,149.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.08 : 21,820.80 = 9,528.64 : x
  2. Step 2: Convert to fraction form
    15,812.08/21,820.80 = 9,528.64/x
  3. Step 3: Cross multiply
    15,812.08x = 21,820.80 × 9,528.64
  4. Step 4: Simplify right side
    15,812.08x = 207,922,547.71
  5. Step 5: Solve for x
    x = 207,922,547.71/15,812.08
  6. Step 6: Final answer
    x = 13,149.60

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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.