Home / 30,870.04-42,590.66-18,927.40

Finding the Fourth Proportional to 30,870.04, 42,590.66 and 18,927.40

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Solution

The fourth proportional to 30,870.04, 42,590.66 and 18,927.40 is: 26,113.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,870.04 : 42,590.66 = 18,927.40 : x
  2. Step 2: Convert to fraction form
    30,870.04/42,590.66 = 18,927.40/x
  3. Step 3: Cross multiply
    30,870.04x = 42,590.66 × 18,927.40
  4. Step 4: Simplify right side
    30,870.04x = 806,130,458.08
  5. Step 5: Solve for x
    x = 806,130,458.08/30,870.04
  6. Step 6: Final answer
    x = 26,113.68

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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.