Home / 12,718.02-17,547.66-7,938.48

Finding the Fourth Proportional to 12,718.02, 17,547.66 and 7,938.48

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Solution

The fourth proportional to 12,718.02, 17,547.66 and 7,938.48 is: 10,953.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.02 : 17,547.66 = 7,938.48 : x
  2. Step 2: Convert to fraction form
    12,718.02/17,547.66 = 7,938.48/x
  3. Step 3: Cross multiply
    12,718.02x = 17,547.66 × 7,938.48
  4. Step 4: Simplify right side
    12,718.02x = 139,301,747.96
  5. Step 5: Solve for x
    x = 139,301,747.96/12,718.02
  6. Step 6: Final answer
    x = 10,953.10

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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.