Home / 12,547.28-17,315.60-7,242.38

Finding the Fourth Proportional to 12,547.28, 17,315.60 and 7,242.38

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Solution

The fourth proportional to 12,547.28, 17,315.60 and 7,242.38 is: 9,994.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.28 : 17,315.60 = 7,242.38 : x
  2. Step 2: Convert to fraction form
    12,547.28/17,315.60 = 7,242.38/x
  3. Step 3: Cross multiply
    12,547.28x = 17,315.60 × 7,242.38
  4. Step 4: Simplify right side
    12,547.28x = 125,406,032.34
  5. Step 5: Solve for x
    x = 125,406,032.34/12,547.28
  6. Step 6: Final answer
    x = 9,994.68

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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.