Home / 16,988.90-25,368.93-13,875.08

Finding the Fourth Proportional to 16,988.90, 25,368.93 and 13,875.08

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Solution

The fourth proportional to 16,988.90, 25,368.93 and 13,875.08 is: 20,719.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,988.90 : 25,368.93 = 13,875.08 : x
  2. Step 2: Convert to fraction form
    16,988.90/25,368.93 = 13,875.08/x
  3. Step 3: Cross multiply
    16,988.90x = 25,368.93 × 13,875.08
  4. Step 4: Simplify right side
    16,988.90x = 351,995,806.42
  5. Step 5: Solve for x
    x = 351,995,806.42/16,988.90
  6. Step 6: Final answer
    x = 20,719.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.