Home / 21,030.80-31,547.01-5,448.02

Finding the Fourth Proportional to 21,030.80, 31,547.01 and 5,448.02

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Solution

The fourth proportional to 21,030.80, 31,547.01 and 5,448.02 is: 8,172.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.80 : 31,547.01 = 5,448.02 : x
  2. Step 2: Convert to fraction form
    21,030.80/31,547.01 = 5,448.02/x
  3. Step 3: Cross multiply
    21,030.80x = 31,547.01 × 5,448.02
  4. Step 4: Simplify right side
    21,030.80x = 171,868,741.42
  5. Step 5: Solve for x
    x = 171,868,741.42/21,030.80
  6. Step 6: Final answer
    x = 8,172.24

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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.