Home / 21,528.72-29,700.63-15,547.32

Finding the Fourth Proportional to 21,528.72, 29,700.63 and 15,547.32

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Solution

The fourth proportional to 21,528.72, 29,700.63 and 15,547.32 is: 21,448.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,528.72 : 29,700.63 = 15,547.32 : x
  2. Step 2: Convert to fraction form
    21,528.72/29,700.63 = 15,547.32/x
  3. Step 3: Cross multiply
    21,528.72x = 29,700.63 × 15,547.32
  4. Step 4: Simplify right side
    21,528.72x = 461,765,198.81
  5. Step 5: Solve for x
    x = 461,765,198.81/21,528.72
  6. Step 6: Final answer
    x = 21,448.80

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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.