Home / 13,136.18-18,127.77-7,547.18

Finding the Fourth Proportional to 13,136.18, 18,127.77 and 7,547.18

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Solution

The fourth proportional to 13,136.18, 18,127.77 and 7,547.18 is: 10,415.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.18 : 18,127.77 = 7,547.18 : x
  2. Step 2: Convert to fraction form
    13,136.18/18,127.77 = 7,547.18/x
  3. Step 3: Cross multiply
    13,136.18x = 18,127.77 × 7,547.18
  4. Step 4: Simplify right side
    13,136.18x = 136,813,543.19
  5. Step 5: Solve for x
    x = 136,813,543.19/13,136.18
  6. Step 6: Final answer
    x = 10,415.02

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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.